computer crashes when idle for too long, or when display is off

so i thought it was a sleep issue, but come to find out its either an issue when the display is off, or if its idle for too long.

there are a lot (thousands) of "warnings" for the display driver crash over the last 2 weeks, they keep building up. its ridiculous.

i have the late 2014 27" imac 5k display, using boot camp fully updated, windows 10