https://bugs.kde.org/show_bug.cgi?id=481716
--- Comment #8 from fililip <t...@nitrosubs.live> --- > (which is not the case for Intel) Interesting. I did not have these problems on an Arc A750 at all, even though I was also doing dual-GPU back when I still had it. What's more, these stutters do not happen on gnome/xorg, but they do on kwin/xorg. They also happen in gamescope (so I doubt the MR you linked me to will do anything about it). Using the nvidia vulkan driver to render xwayland/native wayland games and presenting them on a screen plugged into the AMD card works just fine, I don't seem to exhibit the xwayland explicit sync issue even there. I also noticed very high CPU usage when compositing on the nvidia card, compared to when off-loading. This is probably the strangest part. I really hope this is an early adopter problem, as this is a new RTX 4070 Super, which was not even properly referred to as such by the nvidia driver (it said Unknown Graphics Device or something like that) before 550. The other thing is that it behaves the same way on nouveau, no improvement there (nouveau also seems not to support AMS and adaptive sync, that's interesting). I'll try to test the MR soon. If it doesn't fix it, I'll try getting in touch with Nvidia (since I assume there is nothing more you guys can do about it). -- You are receiving this mail because: You are watching all bug changes.
