Hey there! This looks like a crash were seeing with a similar call stack, can you try integrating this changelist?
CL#42231340 (c0e6083) crash fix when resizing window resolution with -renderoffscreen (UE 5.6)
Related public issue:
https://issues.unrealengine.com/issue/UE-276282 Crash when changing window resolution with AMD GPU, D3D11 and renderoffscreen
Also, I’m noticing your CVars on the command line include those for DX12, but your call stack is for DX11. If your crash is DX11 then the above fix should work, but if you’ve switched to DX12 that CL will not have any effect.