After changing to DX12, POE is no longer possible.

When I changed from DX11 to DX12 in the MAP, the game froze, so when I restarted POE, a gear appeared in the center of the screen from which I could no longer select characters or change options.

I'm on the steam version.

Had the same issue, I had to switch back to DX11 via the config file.

To fix:

Go to your documents folder, My Games, Path of Exile, and open the production_Config.ini file in notepad.

Find the line:
renderer_type=DirectX12

and then just change the 12 back to 11, so:
renderer_type=DirectX11

Save that and then you should be good to run the game!

This even works for PoE2, I changed to Vulkan and it wasn't even loading the game before crashing. I changed it in the config to DirectX12 and now is back to normal.

Thanks a lot!

This was the solution, switched renderer_type=vulkan to renderer_type=DirectX11 and it launched fine