Sounds like a slow or disabled Rolling cache. Create a new one on your fastest drive or in ram, it need not be large. Test at a default airport with a default aircraft.
Thanks for the response. I should have mentioned that I have deleted and recreated the Rolling Cache in the sim. No change. Are referring to a system cache?
Thanks again.
The system cache should be windows managed and you should really have at least approx 15% free space on your system drive, 11% on others. Iām not sure itās your problem though. You would be best provisionally renaming your Community folder before testing offline using default scenery and aircraft with preferably just keyboard and mouse and no nonessential apps in the background. Assuming you have no overclocks if it still stutters itās likely to be either graphics or storage/memory, eitherway you may need updated gpu or mainboard/chipset drivers.
Thats the problem exactly. Nothing to do with the cache, its something in the PG that affects the sim. Hopefully Asobo will fix it.
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Many of us experience the exact same thing.
Please see here:
Thanks everyone, reinstall of FS makes no diff. I popped over the the thread you posted Severeeno, I did a reinstall of Win. a week or two ago. May try the reformat SSD thing tomorrow.
Thanks again everyone.
So you reinstalled Windows and MSFS and that did not solve the issue? 
No, neither made any difference. The Win. install was just a surface, not a full blown reformat. Still thinking about if I want to just erase the drive and start over.
Might just get a second SSD and put FS on it.
The reports of other people say that only full fresh install solves the issue. I am also reluctant as I have so much stuff installed related to my work. Reinstalling Windows and everything else would take an entire day for me. Considering downloads of hundreds of GB, probably a few days.
Right, a lot of hassle for a might work, might not proposition. Also tried rolling back drivers. No luck.
I was having this stuttering problem but I decided to delete usercfg.opt and try setting up my settings from scratch.
It has seemed to work just fine now. I was getting 30fps but dropping down to 25 in some areas with custom settings. I deleted the file and let MSFS create a new file. I set up the Sim with the same custom settings as before but now my frames have gone up to more like 36-40, and the Sim is much smoother now.
Same here. Before the last update it was pretty good acutally (except for known issues in high altitude clouds or nearby big airports). But now I get constant 7 fps (no matter the settings) in the cockpit, but when I switch to the exterior cam I suddenly get 30 fps. Something strange going on here especially since the 30 fps still have judders all the timeā¦
Does that also include key/joystick bindings? I do not mind setting up all settings except cameras and key bindings.
Not that Iām aware off, I think they are saved differently somewhere else.
Anyone wish to correct me if Iām wrong here?
I went ahead and uninstalled FS, did a full-blown reinstall of Windows and finally reinstall of FS.
Seems to have solved the problem.
Just a completely stock version of FS, no mods what-so-ever. Flew for the first time a little bit ago (did all of this before work early this morning). Absolutely smooth no matter where or when I flew.
Ran so good Iām scared to start stickling mods back in.
Anyway, still donāt know what caused the issue but scrubbing the drive and starting over seems to have taken care of it.
At least for now.
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That seems to be the only solution until MS/Asobo resolve the issue. The WU6 update has apparently corrupted files in certain userās systems that affect photogrammetry. It will be a shame if they do not acknowledge this.
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I guess there is no other way. Full reinstall of everything.
I will wait until SU6 hits, but I doubt it will solve anything. After that, I will do a full reinstall.
Thank you everyone for confirmation that it actually solved the issue.
Yep, looks like I will do the sameā¦
Which ācertain usersā would that be?
I for oneā¦ many others on various threads regarding poor performance and major stuttering on the ground with photogrammetry.