I don't use btrfs, but only ext4 on an SSD. Since updating my system from kernel 5.1.7 to kernel 5.3.12 in Tumbleweed, I get regular ~1-2 second freezes (e.g. mouse pointer hangs in X11, or characters don't appear while typing in Konsole) while Blender renders and swaps out finished tiles. This didn't happen with the previous kernel.
I don't use btrfs, but only ext4 on an SSD. Since updating my system from kernel 5.1.7 to kernel 5.3.12 in Tumbleweed, I get regular ~1-2 second freezes (e.g. mouse pointer hangs in X11, or characters don't appear while typing in Konsole) while Blender renders and swaps out finished tiles. This didn't happen with the previous kernel.