I wonder though. Since the launch, I’ve got 3, maybe 4 CTDs, mainly related to third party community content.
I’ve never encountered an fps dropping issue after an hour and I’ve done 5-6 hours flights - all very stable so far, including ones which use complex aircraft (FENIX A320/PMDG 737).
I’ve also done 2.5 hour low altitude VFR flights with the Milviz 310R at some photogrammetry areas in Europe - and the experience was quite stable for me.
Once, I had a very serious stuttering problem, diagnosed it and found the guilty party - a free 3rd party mesh addon which covered Israel. Removed it - and all stutters were completely gone.
My specs are: AMD-5900X (at stock clocks), 32 GB RAM, RTX 3090. Sim library files are installed on a separate 1TB NVME.2 SSD. Currently 352GB of it are used to store MSFS Official and Community addons. I do not have either Reno or Maverick DLCs installed (I just do not like fighter jets/air races/stuff which makes me feel like playing a flying arcade. To be honest, I prefer civil aviation simulation to the military one, so I do not have DCS installed).
I always update my NVIDIA drivers almost as soon as they launch, and so far I’ve had performance issues with only one version (half a year ago, I think), which prompted me to revert to an earlier build, but after this one and only case - never encountered it again. I use the full 2K res of my display in the sim(165 Hz refresh rate, HDR On, most settings on ULTRA, except Texture Synthesis (its on High), Motion Blur (I hate this effect, so I’ve turned it off) and Depth of Field (Low).
I do not use VR or TrackIR. I personally do not think that VR is there yet in flight simulation, maybe in 2-3 generations it will be just right. Thinking maybe to invest in TrackIR or similar hardware, for more pleasant and realistic VFR flights (to look for visual cues).
Maybe, according to everything I’ve listed above , one can assume that the sim is simply not optimized enough. Given time, though, I believe that DX12 will make the sim enjoyable for many users, who currently have hardware related problems. So far I do not use DX12, at in its’ current state it’s not even half-baked IMHO.