The high memory temps are comparable to air temps with the stock cooler on the card... the low mem/gpu temps and the vrms are indicative of the waterblock install. The contact pattern for the gpu looks perfect... maybe I just bought the wrong brand of block....Did you measure them before the waterblock? Maybe thicker pads for the memory or even double stack them just to see if it's better/worse.
I am thinking that it is not the block. I have watched multiple install videos on the net and it seems that no one else is putting thermal pads on the chokes. I might tear it back down and leave out the thermal pads on the chokes. I am not a fan of the Bykski install instructions... Either way the EK block is getting installed next week and the Bykski will be up for sale.Cool keep us updated... I have a Bryski 3080 block I didn't install yet.