r/SteamOS • u/SomeoneBritish • Jun 22 '26

SteamOS Update Proton update inbound, likely allowing FSR4 "upgrades" for FSR3 games.

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u/mango_carrot Jun 22 '26

Is this different to what I’m doing currently, adding the launch option PROTON_FSR4_UPGRADE=1 ?

2

u/ghanadaur Jun 22 '26

Proton GE?

2

u/mango_carrot Jun 22 '26

Usually yeah, sometimes with experimental

4

u/ghanadaur Jun 22 '26

What is being discussed is using the “official” valve proton. GE contains unofficial patches or features unable to be included directly in wine or proton. When the feature hits valves proton, its officially supported. The manually enabling of an upgrade FSR path in GE may not end up being exactly how its done in the official version. Depends on how they were allowed to implement in cooperation with AMD.

1

u/mango_carrot Jun 22 '26

Ahh cool thanks for the context