Sometimes, when I close osu!, my PC freezes for a few seconds and then comes back to normal. I haven't found a reliable way to reproduce this but it appears to happen when you play for a while, since just opening and closing osu! does not trigger the issue.
I'm also having some noticeable FPS drops after a while of playing, too. They seem to happen when I alt+tab away from osu! and then come back, but I'm not too sure of this.
I'm also having some noticeable FPS drops after a while of playing, too. They seem to happen when I alt+tab away from osu! and then come back, but I'm not too sure of this.