I had an ASUS GTX 1070 that would do the exact same thing. When I would game on it, it would sound like a jet taking off into flight. I eventually had to RMA it after attempting to apply every possible troubleshooting method I could think of as well as what workarounds that ASUS' tech support had advised me to do and/or recommended. I know my comment is old, but hopefully you have been able to come up w/ some type of resolution for your issue by now.
I hope you are well. I'm looking at getting the MSI Gaming X Trio RTX 2080ti, as the 2070 and 2080 make no damn sense. Anyone got one of these cards yet and happens to play VR (maybe a Pimax)? I`ll also be looking at the, i9 9900K which is overpriced (isn't everything!?!), but some games require decent CPU i.e. Flight sims (DCS). If anyone has similar specs lined up/on the way. Please let me know. Will be very interested in how they perform together. Thank you.