It is, and runs wonderfully on it. Loved the game, played it on both Xbox and steam deck, and the steam deck felt more responsive (less lag sources, such as wireless control or TV). So no, proton is absolutely not an issue, and for once, denuvo does not seem to criple the game in any way
Microsoft Pleased With Hi-Fi Rush Success, Plans To Reinvest In Tango Gameworks (twistedvoxel.com) angielski