Good news for a problem that has been causing trouble for over 1 month!
After a long search the problem with FPS drops was found, the game KeepUp Survival normally has up to 120 FPS at Ultra Settings. Due to a problem in the engine, a FPS drop down to 60FPS and more was found. And this is huge, but work is being done to get rid of this annoying problem.
Also, it could happen that players with older graphics cards with DX11 could crash the game. This would disprove what some players have told me.
And here again a big thank you to my players who regularly help me troubleshoot
Until then I ask for patience. Continue to have fun