Hey, guys ive been having this issue since the newest update before IB and since every time I play after 30 minutes to an hour it completely shuts off my computer im currently re-installing destiny in hopes to fix this. The reason im pretty sure its destiny and not any piece of hardware is because I have maxed out each of my parts individually and the computer worked fine.
My parts are AMD fx-8350, GTX 1070 Ti,16 gigs of ram, and a 750 watt 80+ bronze PSU from evga
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Did you check your temps?