So I tried all the "fixes" mentioned today, was playing about an hour with no issues, browsed inventory a lot, created some potions, equipped new weapon, etc all worked fine, then BAM! the game crashed while reading in the bestiary, sound stayed on, couldn't alt tab, had to do a ctl, alt, dlt, bring up the task manager and could see witcher3.exe not responding, but could not actually bring any windows to the front, my desktop was black but the music from the game still playing, I could navigate the taskbar though and do a start then restart.