Full graphics now working on ubuntu with the same kick out as you describe, when Easy Anti Cheat cant function and boots. Its been about 8 hours of configuration so far, and that many years since Ive played DUST !
lutris GE Proton8-24 and DXVK 2.3 VKD3d v2.9
D3D extras V2 DXVK NVAPI v0.6.4
Lets get behind the Anti Cheat client shipping with Vanguard thread