Bad GPU or driver problems?

[TCMartin]

Hello, 

i bought this computer in around may and ive had no problems with it. But around a month ago with a driver update the gpu started crashing when i launched a gpu intensive task. I usually open rocket league let it crash a few times and then the gpu goes back to working as normal. But if i open csgo for example it works fine but i have random black lines appearing in the start menu and if i start playing a match it crashses (because the gpu starts going at 100% i think) So heres a few troubleshooting options i've tried:
-Updating BIOS
-Updating the Chipset
-Reverting to old drivers 

-Reverting to stock GPU settings

-Clean driver install using DDU

-Reseating the GPU

When i go to the reliability tool first i get LiveKernelEvent 141 and sometimes i get LiveKernelEvent 117
PC Specs:
I3 8100

RX 570 Asrock Phantom Gaming 4GB

8x1 GB DDR4 Ram

PSU 700W Coolermaster masterwatt lite

Asus Prime H310M-R R2

Windows 10 Pro build 2004