Wait, so you're telling me there's a MOBA without kernel-level, permanently running anti-cheat? Sign me up!
(Yes, I know, every MOBA except LoL doesn't require kernel level anti-cheat soon)
System requirements are identical to Windows, except they replaced "GTX 1050" with "GTX 1060", but oddly enough the Radeon card is the same model. In my experience Proton runs games at pretty much native performance, so I'd be surprised if it was different here.