Question Stability issues, black screen and unresponsive system after GPU RX 6700 XT upgrade

Gyustarr

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Sep 11, 2014
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Mobo: ASRock Fatal1ty B450 Gaming K4
CPU: Ryzen 7 2700 3.2Ghz AM4 Zen+
Ram: Corsair Vengeance (4x8gb)32gb 3200mhz
Gpu: Sapphire Radeon RX 6700 XT 12GB
storage: Crucial MX300 SSD
PSU:Corsair TX-M Series TX750M
Monitor:AOC G2460VQ6 1080p 75hz
Greetings, I'll try to explain my issue as well as I can, since I am not particularly tech savvy, I apologize in advance if I provide inadequate or irrelevant info.
As the title says I just upgraded from an RX 580 to the one mentioned in the title. Following advice, I uninstalled the previous Drivers, used DDU in safe mode without internet connection to uninstall every leftover from previous drivers, and installed finally the new Drivers. Since then I keep encountering some serious issues, whenever I open some demanding game title.
Initially they are for an extended amount of time(1+min) stuck to the title screens until they eventually load. In Cyberpunk 2077 according to the metrics my CPU hit 100% utilization(with stable 54c temp) during loading screens and the title screen. I would assume of course that the issue is a severe bottleneck from the weaker CPU, but the second major issue I encountered was as follows:
Shadow of the Tomb Raider. Same behavior, taking forever to get past the intros and into the menu, but in addition near the beginning of the game during a cut-scene the game crashed and my PC was unresponsive, the screen lost signal and from the speakers I heard a device booting sound. The screen remained without signal until I forced a reboot. When my pc did boot, Adrenalin wasn't running. When I tried to toggle its icon an error popped up "the version of AMD software you have launched is not compatible". I had to do another reboot until the Driver functioned properly. In addition I managed to replicate the exact same error, at the exact same instance(3 times, with settings ranging from High to Low), so it wasn't a one off.
The second event is what made me question if it's really a CPU bottleneck- related issue, I understand sluggish behavior, but a total system crash?In any case, just to make sure that the GPU isn't faulty or the PSU isn't crapping out I run a furmark benchmark for 15-20 minutes. The GPU drew 185w and it's temperature remained stable at 77c with fans at 35%. Between testing the second game, I went through storage checks, Ram tests, turned off the XMP profiles to no avail.
I'd like to think that the CPU-GPU combo is messing up my system, or the PSU is inadequate but honestly I don't have the foggiest.
Thank you in advance to those who patiently read all that.
 
Is your bios up to date on your motherboard? I would use DDU uninstaller again to clear out any 580 drivers that may still be lurking about. Then try downloading the auto detect tool for AMD so that the proper drivers are in place for your gpu. My next suspect would be the psu, you are using 7-year-old technology with a current gpu, however the notice of having incorrect drivers is the main suspect if you will.