Just like class changes.Just tested again today, after trying and praying for several months since I have BfA beta access. Same thing as when I tried first time - when enabling DX12 (and restarting the game), the fps drops by 15-20% (floating above Stormwind) and the game has insane tearing when in DX12 mode (I'm on a GeForce 1060 6GB). Hoped they'd improve on it before launch.
I'm still hoping for a more 'complete' DX12 implementation in the 3 weeks left until pre-patch hits, but looking at how things progressed in these last 6 months with their DX12 implementation, it seems they might just mark the setting as "experimental" (or just disable it completely) and maybe fully add it later on in 8.1 or 8.2.
This company is literally so disgusting.