I've had the opposite experience, with Workshop mods usually working fine as long as the game itself is working fine. It's usually just the mod creation tools

I've had the opposite experience, with Workshop mods usually working fine as long as the game itself is working fine. It's usually just the mod creation tools that are really sketchy under Proton (current head-against-the-wall experience is with Kenshi, where the Forgotten Construction Set will spontaneously freeze after a couple minutes under Proton).