This is Nixxes porting it, the DX12 patch didn't offer the same performance increase in ROTTR as it does in other games; so I wouldn't get my hope up just yet.
DX12 coding was so bad that they have to remove from the launch for Deus EX mankind divided. If it improves performance then mostly 5% to 10% at best because the engine is native DX11 not DX12.