My computer rig: 9900K, ZOTAC RTX 2080 Ti, 36G DDR4-3600, Gigabyte Z390 Aorus Elite mainboard.
Pitool 1.0, SteamVR 60%, 2984X2549
Previous setup and test result with Aerofly FS 2 and X-plane: It's here: 2080 Ti VS 1080 on Pimax 5K+! (updated with X-plane 11 fps, and new update with 9900K!)
Last time I ran Aerofly FS 2 with stock clock of 9900K, and the FPS is 76. The graphics is all maxed out except for shadow which is set to medium. The location is Barcelona Airport of Orbx Netherland TrueEarth, the most heavy load DLC of FS 2.
Today I overclocked all cores of 9900K to 4.7ghz with all other settings the same as above, and the FPS is 88.9.
Also I ran X-plane. The location is London City Airport of Orbx TrueEarth UK South, the most heavy load DLC of X-plane. Middle high graphics setting. The FPS is 29.5.
Conclusion: Aerofly FS 2 is the most well optimized flight simulator today. With 9900K and 2080Ti, It can run at 90 FPS with the highest graphics setting in the most complicated scenery on Pimax 5K+. It’s obviously making good use of all the cores of the CPU.
X-plane is another story, yet at 30 fps it’s still playable. It’s mostly just using single core. Maybe I can make some arrangement of the core priority or turn off some cores so that it can run better?