just got massive blackscreen disconnect while spamming Night Blade spell Dark Cloak ii, was spotted by guard coming out of Jeran House in Daggerfall, spammed Dark Cloak to get away, guard kept seeing thru it and eventually killed me. At point of death game froze then went to black screen, ALT-F4 didn't work, CTRL/ALT/DEL then task manager resulted in a small black screen (ESO) in top left of screen mouse cursor was disabled for everything except toolbar at bottom of screen.
intel 4930mx 3ghz
windows 8.1 64bit
32gig ram
SLI GTX 880m
latency was dipping into 300ms every now and then few minutes before, maybe that was why guard was able to see thru cloak?