ge-proton launches Lego LotR on old Steam Deck but not new (OLED) Steam Deck

[tripecac]

I have the original Steam Deck and a newer OLED one.

Last year I got Lego LotR working nicely on the original deck by using ge-proton 7.48. It's still working great.

Today I tried Lego LotR on the new (OLED) deck. I got the usual bad water textures, so I installed ge-proton 7.48, 8.30, and a couple other versions (using ProtonUp-Qt). None of these ge-proton versions launch Lego LotR on the new deck; it gets to the Steam loading icon (where you can abort by hitting B) and then keeps spinning for many minutes, until I give up and hit B. I've rebooted the deck multiple times, and even reinstalled Lego LotR (making sure it was on the internal drive) but still no luck.

Vampire Survivors *can* launch on the new deck with ge-proton. So I know ge-proton itself isn't completely messed up. It's just that I can't launch Lego LotR with it.

Has anyone else encountered this problem? Is there a fix?

Thanks!

[TJ]

Doing this on my LCD deck too. Latest GE and also on 7.48