4x internal and up = lag about common-shaders HOT 5 CLOSED

Are you using the PSX HW core? The PSX core runs in software and scaling the resolution is going to result in a very large performance hit.
The PSX HW core is not as accurate but you should be able to bump up the resolution with no significant performance impact.

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This isn't really the right repo for that question, but I'll answer it anyway :)

If you're using the non-HW core, the resolution increases are happening in software, which taxes the CPU exponentially for each increase (it's software rendering). With the *-HW core, it should handle resolution increases with your GPU via either OpenGL or Vulkan, depending on the video driver you've selected in settings > driver and the core option.

FAKEDIT: ninja'ed :)

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Thanx guys. But it doesnt do any difference and still says "software" as renderer. I cannot change it to hardware.
I would really need some help with why "threaded video" wont work either. Every single time I start retroarch if that one is checked, I get an error about "win 32 exception occured" etc in "retroarch.exe [1632]. Extremely annoying.
Also I wonder, is it possible to make Retroarch change the resolution to 4k automaticly when I start it so I don't have to change it in windows display settings? Sorry If this is alot but I would be glad if someone could help me out here. Its ok if someone delets this since this was not the correct place to ask.

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Make sure you load the beetle-psx-hw core.

Threaded video isn't typically something you would want. I wouldn't worry about it if I were you.

In your retroarch.cfg, there are settings for video_fullscreen_x/y. If you set those to the 4K resolution (that is, 3840 and 2160, respectively), RetroArch will try to set the mode to 4K when you enter exclusive fullscreen (that is, make sure 'windowed fullscreen' isn't enabled).

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I do load the hw - core, but it wont work. Maybe I would not need threaded video if it would work with hardware mode, but as it wont work.. well then I kinda have to use the threaded video mode.
I will check out that in the config. Thanx for your help.

*edit -
Ok, fullscreen 4k works nice. And somehow it makes the games run better aswell. Thanx alot!

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