I de-activated GSX to see if it made any difference to the A310 crashing to desktop two out of three times from a fresh MSFS session. It has not CTD’d since! See ya GSX!
Just use the installer to disable it, no need to uninstall. All it does is unlink it from the community folder.
GSX can add about 2 mins to startup time so it’s worth disabling if you are not using it.
Thanks for you reply,
Just to be sure…Do I chose “Deactivate” from the top row? Or “Deactivate All” at the bottom on the right-side? Both options are suggesting I’m removing (deleting) the product instead of temporary disabling it.
No
Uninstall then Unlink
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Personally I don’t use the installer for this, although that is the official recommendation.
GSX installs itself using symlinks in exactly the same way as Add-ons linker does. Therefore I have added the GSX installation as a directory in Add-ons linker and then I just click the links on and off in there as I enable or disable other addons. This is much quicker and easier and just as reliable.
Does anyone where GSX finds the fuel figure when loading it automatically into PMDG’s 737? Still having the same problem with GSX loading fuel in pounds not kg but bizarrely only with the PMDG 737-800 BCF. Not sure where the problem lies - SimBrief has units set to kg, as does the aircraft itself but GSX insists on x2.2 as if it’s working in pounds. Only started since last GSX update which has the reference to defaulting to imperial units. Thanks.
@secretfarmerGal : Thanks, glad you showed me the temporary disable function.
I’m afraid GSX was the add-on that caused the startup-delay in MSFS. When I disabled it from loading my startup time increased significantly.
@Umberto67 : If I’m correct you are on of the developers of GSX.
I’d like to suggest to create a “GSX-Lite” version. In other words, it could speed up loading times when you separate the “Adjustment options” like replacing objects to match the correct position, from the Main program.
This might speed up loading times (although I’m far from a technician).
Personally I’m not to upset when a stairway is slightly of position. I would just wait for someone (who sees correcting this as a challenge) to correct it, and update the corrected profile.
Until then I’ll keep GSX in sleeping mode.
Kind regards,
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Do you have Add on Manager as a folder in Linker which you can tick on or off for install?
I do but strangely it seems to install Coatl anyway.
Coutl runs outside of the sim as a separate app, I don’t think it affects the start time. I have Add-ons linker controlling just the links for the 2 packages that GSX itself normally links into the community folder.
@Ticon652460 try going into the GSX config page in the installer, disable all jetway overrides and all custom ground handling overrides. This should reduce the startup impact by well over a minute and then you still get pushback, pax, and normal ground handling.
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I don’t know exactly what you are referring to but GSX is not adjusting anything while the simulator loads.
The startup time in the sim is related to how many files you added with the installed packages, which is a combination of sceneries and objects.
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If you add a large collection of objects, like an AI traffic package with lots of liveries, it will increase the startup time, just like GSX does.
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If you have lots of sceneries installed, they will increase the startup time, just like GSX does.
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If you have lots of 3rd party airplanes, with many add-on liveries, they will increase the startup time, just like GSX does.
That is completely unrelated to their creation: things “existing” in the Community folder, will all contribute to the simulator startup time in some way, just by being there.
Now let’s get to the numbers and see what GSX adds, so you can decide by yourself how to configure it.
Airport Services files :
These are the small .BGLs that controls how operators are assigned to airports when using default Ground Vehicles that has been replaced by GSX, but are not controlled by GSX. These vehicles service AIs and appear on an airport automatically even before you call GSX and, when you call GSX, are automatrically removed around your airplane. The files are very small, but there are LOTS of them, about 15.000 .BGLs.
If you disable the Airport services, you will STILL see GSX-replaced vehicles for default Ground Services but, the choice of operators will be less granular because instead of being selected “By airport” (that what each individual .BGL does), they will be selected “by region”, and since there are only 26 regions in total, the operator selection won’t be as precise as it could be when the airport has a custom Airport Service .BGL Active.
Again, this doesn’t matter AT ALL when you call GSX, because in that case, the Airport Service file doesn’t have any effect anymore: GSX will choose the operator according to its own rules, no matter if you have customized Airport Services or not so, when GSX proper is in use, having the Airport Services enabled or not, won’t make any difference.
Since disabling all the Airport Services will reduce the number of installed files in the sim by about 15.000, if you don’t mind having less accurate operator selection for default (not true GSX!!) Ground Service vehicles, this should be your first choice, if you want to reduce the GSX contribution to the startup time. Even smarter choice would be, disable everything except the airports you are flying the most, since adding back 20-30 files, when you removed 15.000 of them, won’t change anything so, at least you’ll get accurate operators (for AI) there
Jetway Replacement files
These are about 900 .BGL so, compared to the 15.000 Airport files, their impact on startup time is way lower, If you already disabled the Airport Services, disabling all Jetwway replacement won’t give much benefit.
The main reason to remove all jetway replacement files, is not really saving startup time but, instead, if you never use Default airports, you won’t have to remember to always go back to the GSX Config Page in the Installer and click the Exclude 3rd party button to Disable Jetway replacement for a 3rd party you installed after GSX. If you don’t care about default sceneries, disabling ALL airports from jetway replacement will remove you from the burden of having to do that. The manual suggests doing that in this case.
GSX Simobjects
Even after disabling Airport Services and Jetways files, there’s still some contribution from GSX to the simulator startup time, due to the simple fact a sizable number of Simobject has been added, which is like adding an AI Traffic pack with many models and liveries.
Note that, this doesn’t have anything to do with the very well known “Max Simobject Limit”, which causes objects to not appear, Simconnect connections being broken, Navdata API not responding, etc. That is a completely different matter, and it’s the limit on the maximum number of Simobjects that can be used at the same time, not the number of available Simobject variations. The number of available Simobjects affects ONLY the startup time.
GSX can’t really work without these, just like an AI traffic package can’t work if you remove its model’s collection so, if you want to reduce the startup time even further, the only option is to disable GSX, which is done from the FSDT Installer this way:
Click the Uninstall button and reply:
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YES, to the 1st question, which asks if you want to UNLINK.
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NO, to the 2nd question, which asks if you want to UNINSTALL as well.
By doing this, GSX will be left installed, but it would be Unlinked from the Community, so it will be exactly as if it were never there, as far as the simulator is concerned.
The advantage of having the product UNLINKED, is that it can be Enabled again very quickly, while a real Uninstall would take way longer.
This is valid for ALL FSDT products you see in the FSDT Installer: they have an “Addon Linker” functionality built in.
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Thanks Umberto for the insights, very valuable 
Thanks for your extended reply about the possible impact of GSX on performance / loading time.
Like most simmers that experience problems, ‘we’ are limited in finding a possible cause for whatever problem we encounter. In my case (reply - topic nr.1579) I noticed MSFS took a very long time to load after reinstalling MSFS. Therefore I disabled all the content of my community-folder and followed the usual steps to relieve MSFS from performance-load.
Even in this ‘vanilla’ state MSFS started up very slowly and showed no loading activity for 3 to 7 minutes at 50% loading progress. (Btw my apologies for my English but it’s not my native language).
Therefore I wanted to rule out other addons (like FSLTL and GSX) which (as far as I know) load independent.
Like you already mentioned, after disabling GSX, my loading-time increased slightly. But this (GSX) couldn’t be the main cause of the extended loading time. So this problem remains for now.
Also thanks for your detailed information about the “Airport Services files, the Jetway Replacement files and the GSX Simobjects” which is very informative.
I’m not going to Uninstall GSX because it never gave me a performance decrease, not even while all the animations were activated (Passengers, Baggage trucks etc.). But until I find the cause of my loading-time problem I’ll keep GSX (and other addons) in sleep-mode.
Kind regards,
Ed
Hi, sad to read this but glad at the same time I am not the only one to experience this.
(not GSX related)
MSFS 2020 stall at activity screen upon 50% loading for around +2 minutes, doing absolutely nothing 0% cpu, ram, disk usage.
Thought about reinstalling the whole thing but apparently it won’t help.
This issue is very disappointing, especially when you invested in a 4.0 Nvme SSD drive in a useless wish to speed things up a little… 
@LeGeek76 Indeed.
We know MSFS is a very demanding ‘Game’. When we add addons it seems logical it needs time to process the information, but it seems strange that MSFS pauses during load without any visible activity.
As I’m far from technical I can only assume it has to do with communication with the ‘home servers’. Because the delay also takes place when all the addons are disabled. Therefor I’m curious what is causing this long pause which apparently doesn’t effect other users.
Reinstalling could be an option although in my case it didn’t help. Be advised, reinstalling takes a long time. Not because of the procedure itself and precautions you’ll have to make, but due to the massive amount of data your Pc has to download and process.
Downloading the Main game takes about 2 hours (in my case with a 600Mb/s Internet connection). The average speed was around 130Mb/s.
The ‘fun’ starts when MSFS starts to download the ‘Content-Manager updates’. The download speed decreased to 2 Mb/s. So this took a ‘while’ (don’t wait up).
I hope the problem will disappear in a future update or someone has a solution to speed up the startup time.
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I got the marshaller dance today parking at WADD! Complete with music too!
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Version 2.8.9 – December 24th, 2023
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GSX (all versions) New: Adding support for Pull during Pushback (Reverse Pushback).
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GSX (all versions) New: Adding “Return to Gate” option at the end of Pushback.
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GSX Pro New: PMDG 737 Integration, added External Power connection when operating Jetways.
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GSX Pro Fix: Jetway connection correctly detected when restarting the Couatl engine when a
Jetway is already connected. -
GSX Pro Fix: Several timing tweaks added to prevent editing markers being left on ground after exit
any editor. -
GSX (all versions) Fix: Interrupt Pushback before the Tug connects.
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GSX Pro Fix: Fixed FSDT KEYW install detection.
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**GSX (all versions) NEW:**Added the following Handling operators: Lodz Airport (Poland), Frankfurt
Hahn (Germany), ThaiAir Asia (Thailand), Maman Cargo (Israel), London City Airport (UK), JetCenters of Colorado (USA).
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The mythical reverse pushback at last, that will make many people happy! Great Christmas present from FSDT, thanks @Umberto67.
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Here’s the Video tutorial showing the new Reverse Pushback:
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I’m still very happy with GSX, which hasn’t given me any problems for quite a long time now (fingers crossed I didn’t just jinx myself…). One request I’d make: it would be great if there was a “skip” command of some kind that would force GSX to proceed with the script notwithstanding a failed condition. Namely, I’m sick of running into situations where a plane has its doors mapped oddly or in a nonstandard way, and GSX cannot “see” that the door is opened or closed, and beeps repeatedly waiting for me to open a door that’s clearly open already. (This happens to me with the Ejets right now for the most part.) The only way to escape this is to quit out of Coatl entirely. (Or edit the plane on the fly, but that’s difficult to do if you don’t know which of the many options available is the correct door variable to use…) And if this comes up, it’s functionally impossible to use the boarding system, as it will never resolve itself.
It would be nice to have a hotkey or something to just move the process along notwithstanding the lack of open doors… It would also be nice if those planes fixed their door issues, but that’s another issue entirely.
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Love the closing song! hahaha