The last 2 Beta's i experienced something odd. The FPS is quite unstable generaly. V-sync sometimes looses it's sync, while FPS should be above 60. Lowered the settings so the system should have no problem running it 60+ fps (one car - med settings). But still framerates vary quite a lot. Even on FPS friendly Zandvoort. Now comes the strange part. As soon as i enable framerate monitor with CTRL-F, framerate suddenly is perfectly flat.. V-sync is than working flawless en the image is silky smooth. Info shows me that my system is only using 70% GPU -and 17% CPU. This happened on both Beta versions. Is not something i can explain or get rid of with different graphic settings. Can other people try if their framerates get more stable with the framerate monitoring on? PS: Yeah i know V-sync is bad...only put v-sync off when sims get above 110-120 fps. I hate tearing. My Panasonic plasma has almost zero screen-lag, to make up for the lost V-sync frame.
I had the same problem. I make a clean installation of rf2 and setting again rf2 and the problem was solve. After doing that DON'T USE ALT + TAB it doesn't work correctly. Don't return in windows when rf2 is running. Other thing : in the launcher YOU HAVE TO CHECK THE BOX NAME "auto close launcher" (or something like this). Don't use vsync in your nvidia driver. Use vsync in rf2 : "video". Privilegiate rf2 AA it seems better smooth.
More informations https://forum.studio-397.com/index.php?threads/stuttering-report-and-temp-solution.57756/page-3
