I followed the steps below to for the game to run with Direct X 11:

1 - Downloaded dxcpl from here: https://www.netvector.de/downloads/dxcpl-directx-11-emulator.exe

2 - Executed protontricks and using explorer, executed dxcpl and on it.

2.1 - Clicked in Edit List > ... > selected the game launcher > add > ok > checked on Disable Feature Level Upgrade and choose in the list called Feature level limit: 11_1. > Applied and closed

3 - Launched the game from steam.

4 - Set the fps limit to 120

Worked very well here with High video settings. Tried to connect to racenet but didn't worked although I could create private matches and search for them, but didn't get anyone to test it online.