[Bug/Vulkan]Beetle Saturn on 120hz screen

[Immersion95]

Hi, I can't get this core to work well on a 120hz screen. It's the only core that does this in RA for me.

Example : SFA3 (while fighting) & XMVSF (when entering the char screen)

I tried BFI & Vsync interval to 2 but it's really slow at moments.

It's only in Fullscreen, Windowed is working great. I couldn't get related bug information in the logs moreover.

[bslenul]

Oh funny, I mentioned a similar issue on Discord today :D

But yeah, I read everywhere that it's recommended to have the vsync swap interval to "2" on a 120Hz and that's what I'm using for a while now, but for some reason it doesn't work well at all with this core.

Here's the video I've posted on Discord:

https://user-images.githubusercontent.com/33353403/124998042-fe62f800-e04b-11eb-87fe-0f870f705647.mp4

It goes from 60fps (interval set to "1") to 48fps (interval to "2")... :/ And it's not some kind of performance issue because if I fast-forward I can reach ~70fps on that exact same spot.

It's only in Fullscreen, Windowed is working great.

However in my case it's an issue in windowed too, in fact the video above was captured in windowed mode.

[Immersion95]

Oh funny, I mentioned a similar issue on Discord today :D

But yeah, I read everywhere that it's recommended to have the vsync swap interval to "2" on a 120Hz and that's what I'm using for a while now, but for some reason it doesn't work well at all with this core.

Here's the video I've posted on Discord:

2021-07-06_12-16-11.mp4 It goes from 60fps (interval set to "1") to 48fps (interval to "2")... :/ And it's not some kind of performance issue because if I fast-forward I can reach ~70fps on that exact same spot.

It's only in Fullscreen, Windowed is working great.

However in my case it's an issue in windowed too, in fact the video above was captured in windowed mode.

Same ! Problem with interval 1 is the juddering so no solution found for me

[TideGear]

I'm just trying to play at 60hz but I'm having issues I didn't have before like this too. https://github.com/libretro/beetle-saturn-libretro/issues/206#issue-947293608

Do yall have Hard GPU Sync enabled?

[TideGear]

I fixed my issue (https://github.com/libretro/beetle-saturn-libretro/issues/206#issue-947293608) by changing my Nvidia power setting from the default of "Optimal power" to "Prefer maximum performance". "Adaptive" didn't seem to work. I'm back to 60 FPS!

[Immersion95]

I'm closing this issue as there is a better solution for Retroarch : -Vsync swap interval back to 1 -Enable Vsync & Sync to exact content framerate

Benefits : -The framerate is the original one for all cores so games from Arcade, SNES, etc.... that have weird refresh rates are running at their intended pace -Best input lag

Cons : Small judder from time to time but not very noticeable - Why ? It's because games won't run at 60 fps as they don't need to be synced to that refresh rate. They are running at their original refresh rate "inside" our 120hz.

[bslenul]

Another con: this is only compatible with G/FreeSync :(

[Immersion95]

Another con: this is only compatible with G/FreeSync :(

No it's not, you can try for yourself :). I don't have VRR neither.

[bslenul]

Doesn't seem to work great for me at least :/ Like at the same spot on Powerslave shown in my video above, I get ~56-57fps, which is better than interval set to "2", but I can still hear the sounds crackling because of these few missing fps.

So yeah, I'll just stick to "1" for that core.

edit: Just noticed the original issue seems to happen only with vulkan, if I switch to d3d11 or glcore it runs at 60 with interval set to "2" oO So instead I'll keep "2" and just make an override to switch video driver.