G-sync FPS drops in loading screens

Hey, I’ve already found several threads about g-sync issues in loading screens. I have found a new issue I believe.

I just bought a new high-end PC and screen, with g-sync in it.

I then notice that when g-sync is enabled, it causes FPS/flickering in loading screens. I then troubleshooted for some hours, and found that this is likely related to DirectX11 or DirectX12. When I use DirectX11 in WoW interface settings, it stops flickering and causing issues. But immediately causes issues once I choose DirectX12 again.

Are there anyone that have a fix for this or can assist me? I obvivously want to use the DirectX12 for the benefits it has over the DirectX11.

NOTE: Update:

I now disabled g-sync, and went to DirectX12, and I am now receiving screen tearing on loading screens. None occuring when DirectX 11.

Thanks!