I'm running TSW4 in DX12 mode and have some mods installed related to that. I think the play in editor mode runs in DX11 mode and the DX12 mods are interfering causing the play in editor mode to run terribly. Is there a way to force the editor to use DX12?
Solved as per advice from cActUsjUiCe On Epic Games launcher: Click on "Library" Click on three dot menu or right click on Train Sim World PCEDITOR beta Click on "manage" Select Launch Options and add -dx12 Start the editor and check it out.