Have you tried updating the controller’s firmware?

The Ryzen 4800U APU is weaker than the Steam Deck, but I’m sure it’ll be able to run plenty of old AAA games, indies and emulators

I’d rather have better hand grip and ergonomics than small form factor. I used to play on my PSP and DS/3DS all the time, but yeah nowadays the Steam Deck is the best for my hands

Have you tried lowering the resolution and enabling FSR?

Use Luxtorpeda as a compatibility tool and OSRS will run using RuneLite and track time:

https://github.com/luxtorpeda-dev/luxtorpeda