Gymnasiast,
Thanks for your reply.
So I had some time over to try and iron this one out. I did correct some issues I had with the correct driver for the Intel "card" so i switched back to that.
Did not want to mess any further with the nvidia-stuff since I do have such a great performance on my laptop running with even older intel graphics.
So, to confirm if there is an issue or not now with my Linux install, I did follow a recommendation to download a game called "Xonotic" (Its like a quake-clone i guess).
It has two start options, the first one is GLX, using this I get locked at 60FPS. (Guessing that's due to my screen being 60hz or something).
Using the start command "sdl" instead i get between 60-100 fps in this game.
This tell me that there really should not be any issues with the driver itself.
For the case of OpenRCT2, it seems like i have similar performance no matter what i choose, software/hardware/opengl. Maybe slightly higher on openGL.
However, what makes the FPS really rise is when i size the window down, if this is any clues?
Not a big gamer, so not really familiar with what depends on what 😅
The install is Gentoo 64bit on i5-4590 kernel is 5.19.0 Gentoo release.
Is there any options or something that can be entered in the console in order to diagnose this? I see that there is no real error output in the terminal while starting the game.