What case are you using btw? I have it in a Fractal R6 which is on the warmer side, but it shouldn't be this warm because my 1080ti VRM temps don't exceed 100 degrees.
I'm using an NZXT which has a removable, but solid front so I can't imagine it's the best. However I do have some decent
noctua intake fans which will keep the temperature down.
Case:-
https://www.overclockers.co.uk/nzxt-source-340-midi-tower-case-black-window-ca-152-nx.html