[2020] Game constantly crashing on decent spec PC. I need help.

Hi, I've posted and checked on Tarkov forums, tried to get into contact with BSG but nothing's working, feel like reddit is my last hope.

These crashes usually happen in raid, the game will freeze then I'll get an error pop up and after a few seconds the game crashes. At first it was once a week and now its becoming almost every raid, and has crashed straight to desktop once just in my stash. I feel this happens more on hot days, but I couldn't say for certain. I run HWMonitor during each session and cpu cores never reach anything above 70 and gpu 78.

I upgraded from a 650w to 850w PSU thinking it was that but it's not changed anything.

I also previously had the game installed on my gaming hard drive, yesterday completely uninstalled both the game and BSG launcher and reinstalled onto my SSD, that's not helped either.

My PC specs:

i7 9700k OC to 5ghz w/ NZXT Kraken AIO

32gb DDR4 3200mhz

GTX 1070

850w PSU

Any ideas as to what this might be, and how I could fix it would be great. I'm trying to stream Tarkov regularly and am met with constant crashes that just ruin the stream. Thanks in advance.