Deaths out of sync

For the past week or so, deaths have been very out of sync.

Monsters die at any random moment when I attack them. It's obvious with Einhar's beasts that take a long time to kill. It's most common after they escape the net (Deadly Prey). A beast that I can only slowly damage might suddenly vanish with nearly full life and shield.

My character dies out of sync too. The most obvious example is when battling for Crimson Iron. The monsters have a spell that gathers a large sphere of blood overhead that drops down with lethal force. I see the sphere building and run away. I often die after running away but before the sphere has dropped. Sphere forms, run away, death, sphere drops. Some other lethal attacks that require dodging do this too.

I don't have any other symptoms of sync issues. The map never jumps and network latency is low. Using Linux Steam.