I think i found a solution for the stutters. I did quite a few research in the sim by loading aircrafts in various situations and at various airports. For some reason when you load a flight from cold&dark with or without creating a flight plan in MSFS menu, we are getting spikes in CoherentGTDraw once the aircraft starts moving. Thus causing the overall stuttering. For e.g. here is the spike i was talking about in FPS display when you start taxi.
Stuttering on ground:
BUT, if you reload the aircraft manually from the developer menu, while at the gate before entering flight plan, then load a flight plan and taxi. 90% of the stuttering is gone and the sim is very smooth. For e.g.
Reload the aircraft at the gate:
Solution (Try this flow):
Spawn the aircraft at the gate. Do not create a flight plan using MSFS Menu. Just select the departure airport of your choice and the gate.
Once the aircraft is loaded at the gate, power up the aircraft. I mean turn on the batteries and the external power.
Now enable developer mode from the Options -> General -> Developers. Skip this step if it is already enabled.
From the top developer menu open aircraft selector from Windows -> Aircraft Selector.
You will see a popup opened as in screenshot 2, now click the load button. Do not select anything else in the list or else you will end up loading a different aircraft or livery.
Wait for the aircraft to reload, note the aircraft and the virtual cockpit will disappear for a brief moment.
Once the aircraft is reloaded, it will by default configured for take off state. So turn on the external power or APU, then turn off the engines, bring the flaps up and reconfigure the external and internal lights to before start configuration.
Now load the flight plan, push, start, taxi and fly!.
Now if your are planning for a 2nd leg, just reload the aircraft once parked at the gate and start over again.
Please let me know your comments, i have tested this in 787 and A320 FBW Mod and the results are the same. I haven’t tested this in any GA aircraft, since, i am facing this issue only with the airliners. The screenshots mentioned above was taken at JFK airport with custom broken clouds weather preset. Here are my PC Spec and sim settings, just for your reference. I would recommend, try the above solution without changing any of the below sim settings to see if it really makes any difference with your current sim settings.
AMD Ryzen 3700X (No OC running at 4.1GHZ)
Nvidia GTX 1070 8Gb Graphic Card
32 GB GSkill Trident Neo (3600 Mhz) memory
1080p HD monitor running on (1920X1080p) resolution
MSFS 2020 is installed into 1TB SSD
All of my sim settings are in High. Except the glass cockpit refresh rate is set to low.
VSync is OFF
Photogrammetry is OFF
AI is OFF (Only static ground traffic)
Multiplayer to OFF
Rolling Cache to OFF
I have configured the max frame rate in nvidia control panel to 31 FPS, to further smoothen the experience.
- Push back tug will not appear when you try to push back from the gate after reloading the aircraft. The solution is to keep the parking brake on, press [Shift+P] twice. This will start and stop the pushback immediately. Now press [Shift+P] again, you will see the push back tug coming in and connects to the aircraft.
Please let me know your comments.