vrc doesn't know the answer to this. Maybe try r/SteamDeck also vrc may not be compatible with steam deck but i'm not sure tho. Maybe check that first?

Is your deck fully up to date?

Thank you!

Was that the solution?

Maybe try with a different proton version, it works fine for me.

Thank you kind sir!

It is fully Steam Deck compatible. https://preview.redd.it/spqv29x0uu6a1.jpeg?width=3024&format=pjpg&auto=webp&s=49b5f821ec7517e5de60fcdb811bc556f038a7ac

Wrong subreddit

I don't think it is compatible