So, after telling me to flash a non-LHR BIOS, then me bringing that up, then stating they would go check with the BIOS team, again, customer service just ghosted me.
Seems this is indeed a hardware fault. Just surprised EVGA haven't fixed it properly for newly manufactured cards...
Given I'm using a EK Vector waterblock (I believe it's revised model) and all the issues plaguing the 3080 FTW3 and red lights with this block, I really don't think I want to risk the RMA/refurb route. If the card died or something, sure, but right now I'd be at the mercy of not receiving a dodgy refurb... And it's like £30 a pop for me to send a card back to EVGA. I can just imagine me sending this new card back, getting a refurb and then it too has power balancing issues...
What's annoying me most is the total lack of communication from EVGA. Like they decided the best thing to do was a communication lockdown. Even Jacob last year saying he'd get a response and going quiet. That's not good customer service, just a brand trying to sweep something under the rug because they know a large number of buyers will just use stock BIOS.
I'm grateful for EVGAs step up program, as I am for their usual great warranty, but this leaves a bitter taste. Especially when other brands 3080s work fine.