Hi! I’ve been experiencing some similar issues since last friday/saturday. It started with VLC crashes, but then I tried some package downgrading and think it’s more GPU driver related. Just in case you want to follow it, here is a post I’ve made about it: https://forum.manjaro.org/t/system-frequently-crashing-after-gpu-drivers-update
Some people have claimed to have similar problems, we’re just looking for the culprit on it or a better solution. Hope we can find it! Just step by if you want to read/write any updates.