Crashing in Mistmoore when someone takes damage

[Hakubi]

I have a Rogue in Mistmoore who was leveling fine last night at CE. Logged back in today, now any time a character around me takes damage my client crashes (no error, just client stops immediately responding). As long as no one gets hit it seems to be fine and I can chat/walk around. Deleted my log file and tried again and still no dice. My other characters worked fine that I tried (level 7 monk, 45 druid, 45 shaman, 40 necro).

I updated Windows 10 for the first time since February last night after the Wincry scare which seems to be the only variable that could have changed this (roll up updates and maybe an Nvidia update, now on 376.53 which seems to be Feb WHQL though and probably the same version I was on prior).

Any ideas?