flipping frames bug and workaround

[e1337]

I have this happen on 1.2b (Manjaro Edition 3GB), although I don't know what trigger (power saving or frequency change). It seems to happen when there's some sort of high CPU and moderate to high network use situation, e.g. it happens sometimes when I launch multiple apps at once with some already running that use the internet. Somehow, the combined activity of all the launches just makes it trip over something. Edit: actually I transferred a mainboard once but I forgot if it was for this one, so it could also be 1.2a (but not older), if someone knows how to check via software let me know