after switching from the SU3 (2024 Beta) back to SU2 (stable), I ran into massive problems:
MSFS would crash my entire system right after startup – black screen, hard freeze, sometimes even a reboot. This happened both in 2D and VR.
At first, I thought my PC was broken, but after some research and testing, I followed a full cleanup routine — and not only did MSFS run again, it now performs better than ever before. Like… ridiculously better.
What I did to address the issue:
Emptied the Community folder completely
Deleted ROLLINGCACHE.CCC
Reset UserCfg.opt
Cleared Shader Cache:
%LocalAppData%\NVIDIA\DXCache
%LocalAppData%\NVIDIA\GLCache
Windows → Storage → Temporary files → Shader cache
Launched MSFS in Safe Mode after first crash
My specs (in case it matters):
CPU: Ryzen 9 9950X3D
GPU: RTX 5090 LC
RAM: 64 GB DDR5 (6000 MHz, EXPO)
Resolution: 3440×1440 UWQHD
Cooling: Arctic Liquid Freezer III
The Result?
113 FPS over New York, Ultra settings, no Frame Generation, no DLSS
MainThread usage low, GPU fully loaded
RAM usage: 63 GB (!), VRAM: ~11 GB
Zero stutters, smooth camera panning, no CTDs
Has anyone else seen a massive performance boost after doing a full clean-up like this?
Maybe all that cached data and config clutter just builds up over time and drags things down?
Would love to hear if others see the same kind of results — or even test it!
I´m on a similar setup, except a 4090 GPU. As it is my brand new one I have tested it during weekend and my conclusion is that source of most problems is still rolling cache alone, whose usage is forced. The first flight session after having deleted it will run perfect, even after multiple flights in different locations. I have kept everything else you listed and only deleted rolling cache several times during tests and I always get the same good results.
I would say you just need to delete that file alone and it doesn´t need to be big as it does not prevent problems to happen. I have it set to default 16GB and as soon as it gets populated with a few GB (even something in the 4GB range, which is the result of few short flights during 1h or so) the problems start and they don´t go away.
On the other hand there´s still a serious problem with game window focus detection in Windows 11. As soon as you leave the game window, for instance if you minimized to desktop or operate anything on a second monitor, chances of getting proper game focus again are simply random. Even after having clicked several times on cockpit or reseting window with ALT+Enter the frames keep bouncing like crazy, despite being on high fps situations.
I have a G-sync monitor but even with it I still see very inconsistent frames and lack of smoothness, that should not happen at all. So far AMD frame generation appears to behave better than Nvidia frame generation, which is simply broken. It looks like something else is getting rendering priority for really short times, but still being enough to send game to background shortly and restore it afterwards, which results in those frame inconsistencies. However CPU and GPU usage keep steady, independently from workload created by dense or sparse scenarios. So it does not appear to be any severe overloads at system level.