You using Lutris? hmm maybe its working differently there..have to test.
edit: OK yeah it doesnt work this way on Lutris, but theres another way to do it!
First. Disable DXVK on Lutris. then copy this d3d9.dll into the WAR folder. where you RorLauncher.exe is.
Then go to your winecfg. add WAR-64.exe into it and go into overrides and add d3d9 and mark it as native
In Pictures: https://imgur.com/a/gbLf4UH
*that dll is 32bit DXVKs d3d9.dll, its 32bit cause WAR-64.exe is not actual 64bit executable but large adress aware patched 32bit.