RX Vega 64 Crossfire issue

[TwoKillaBytes]

Hi everyone, I recently got my second XFX Vega 64 card and I have this weird issue when enabling Crossfire mode. Everytime I enable Crossfire mode on AMD Radeon Settings it would be ok for a while, but after that my computer will get a massive lag spike. (Mouse cursor skipping, cant open programs etc.) The only reason to solve this problem is to hard reset my computer. After resetting I checked my Radeon settings to see Crossfire mode is still not enabled. I would have to do this 2-3 times (Massive lag spike, hard reset) before I can enable Crossfire mode. One thing i noticed when I get the massive lag spike is my 2nd Vega 64 card's GPU Tachometer turns into a single green LED and the RADEON logo turns off. Anyone with a crossfire setup have any idea whats wrong?

 

[TheUzu]

I’ve had this before, use DDU to wipe the graphics drivers and fresh install.

 

Worked for me.

[TwoKillaBytes]

13 hours ago, S.Stephenson said:

I’ve had this before, use DDU to wipe the graphics drivers and fresh install.

 

Worked for me.

Thank you so much. I will try this later when I get home.