Hi
Have an Asus X399 Extreme mobo with EVGA 1200W Platinum PSU and TitanV GPU with AMD Threadripper CPU

This setup has been rock solid

I recently invested in a 2nd GPU, the RTX 2080 and have been pulling my hair trying to get both GPUs running

1st issue
-Code OE error on boot , something related to microcode?
I sort of resolved this by simply switching the PCIE slots for the 2 cards.

2nd issue
- Bad TLP and Bad DLLP errors after passing the grub screen in Ubuntu

I assume this might be driver related as its a dual boot setup and I can finally boot into windows after installing the latest Nvidia driver.

Now when running some gpu benchmarking tests I am experiencing random shutdowns, with power loss to the mobo.(leds go out)

After a wait of a minute or so after flipping the PSU off and on I can boot up without issue.

What are some possible causes of this?
I have never experienced this particular issue before?
Is overheating a possible cause? The new RTX cards throw off a LOT of heat.
Any replies welcome, beginning to regret my investment in this new RTX card!