Framerate issue when scaling to whole monitor.

[MylesGit]

It seems when cavalier is widowed it runs at 60fps perfectly but when scaling to my ultrawide it goes to ~15 fps.
This is not a hardware bottleneck, AMD Ryzen 5 3600 and Radeon RX 6700XT utilization within 5% at all times.

Running Fedora 37, Gnome, Wayland.
Video Attached
Screencast from 2023-02-05 15-16-27.webm

[MylesGit]

Would like to add that I've found that clicking off the window sometimes fixes it. Not very consistent.

[fsobolev]

Could you please run the app in a terminal and see if there's any output?
If it's installed using flatpak, use this command:

flatpak run io.github.fsobolev.Cavalier

[MylesGit]

No errors in terminal. I have it set to 50 bars and it seems if too many of them are being used while scaled fully the fps drops. This doesn't happen when it's only covering half the screen though even if the amount of bars is the same.

[MylesGit]

Screencast.from.2023-02-05.15-48-14.webm

[fsobolev]

I guess my eyes are not good enought to see significant fps drop 😅, but anyway, since you see it there should be a problem.
Does the issue persist if you change some settings in Cavalier tab in preferences window?

[MylesGit]

I guess my eyes are not good enought to see significant fps drop sweat_smile, but anyway, since you see it there should be a problem. Does the issue persist if you change some settings in Cavalier tab in preferences window?

I think the gnome video recorder caps fps at 30 or something. I'll try recording with OBS.

[fsobolev]

I think the gnome video recorder caps fps at 30 or something. I'll try recording with OBS.

You can also try Kooha, it allows to set FPS in settings.

[MylesGit]

Just put it in a zip because I already recorded it in mkv format and apparently github doesn't allow it.
2023-02-05 16-07-16.zip

[fsobolev]

on this video framerate is constanctly low, even when window is not maximized. Maybe it's the video framerate. Nvm, really, don't bother recording a video, it's not like you have to proof there's a framedrop, if you say it's there then it's there.
I can't unfortunately reproduce it on my main PC with 1360x768 display, I will later try on another machine with 1080p display.
It would still be useful if you can provide this information:

Does the issue persist if you change some settings in Cavalier tab in preferences window?

I have one idea what can fix it, I will later implement it and send you a flatpak package so you can test it.

I noticed low framerates in bigger windows as well, but I always thought it was because in a bigger window low framerates are simply more noticeable.

I'm planning on working on some minor performance improvements, but I can't promise anything.

[fsobolev]

@gregorni feel free to commit to framerate-issue branch, I will do some things there

[fsobolev]

I noticed low framerates in bigger windows as well, but I always thought it was because in a bigger window low framerates are simply more noticeable.

Well, with window size the drawing area size increase as well, meaning Cairo has to draw more pixels, and maybe it's not fast enough to draw very high resolution picture at 60fps... But maybe something is slowing it down, so there's hope we can fix it or at least improve the situation.