Small update, got the Kryosheet fitted yesterday and system all build back up. Big improvement on hostpot temps. Previously over 102ºC, now down to a maximum of 85ºC, and hovers around 78-82ºC in Timespy Extreme. Big improvement, still not as low as I'd like, but in a much safer zone now I feel. However since then I have learnt that I have placed two of the thermal pads on the backplate in the incorrect position, which I am told leads to excessive pressure on the PCB and reducdes pressure towards the waterblock. So I'm going to order some new 3mm thermal pads and rectify that, which will hopefully net some further improvements.
Aside from the thermal pad issues above, the block mounting seemed to be absolutely fine as far as I could tell. Hopefully once I sort the thermal pads it will help the hotspot temps even more.
Ooft that sucks. I'd be beside myself if I killed my card! This Kryosheet thermal pad is conductive too. I put kapton tape around the SMDs though.
That's rough
I was pretty disheartened when I learned of so many people having issues with this block. I would have gone EKWB if they made a block for this card but sadly they do not. In hindsight I probably should have bought a card that EKWB did make a block for. The other option for me is a Bykski block which I can find little to no feedback on. The Alphacool support doesn't seem particularly outstanding. They had someone send in their card and they tested it themselves, apparently couldn't find fault with it. But the screenshot they posted was a test in Furmark which does not produce the highest temperatures for some reason.
I spead the thermal paste as per the instructions.
Like I said above, I am much happier now that the hotspot is a lot lower than what it was, the Kryosheet has worked wonders in that respect. So even if there's no further improvement, it's temps I can live with.