I more or less have the same issue with a WK43 Vision OC .Started around 3 weeks-ish after I installed the card with a 750W HXI from Corsair. My old 1080ti is working fine in the current config(swapped the cards). I'm waiting for a new PSU which, drum roll, it a rmi1000w. I'll let you know how things go after I swap my PSUs.
For the past week I was getting a black screen +restart at least once a day. Now that I swapped back to my 1080ti I'm 3 days with no issues.
We're you having problems from day one ?
@GIGA-Man , my retailer from Romania is kinda known for having **** RMA service. Is there any way I could RMA(if needed) through GB directly ?