Desktop mode is the best:

The Deck makes a great comic reader for those gigantic DC omnibuses - loading them on a phone is awful with the lag but on the Deck the experience’s totally smooth. Bonus for the bigger screen in combination with the auto panel zoom.

Used it loads during our holiday to quickly sort and edit photos.

It’s Protondb entry should help: https://www.protondb.com/app/1222680

Valve does need to look at this and then explain - in way more detail - what’s causing the behaviour people are experiencing. Simply saying “none of this is related and we can’t replicate the bug” isn’t going to convince anyone.

However, having gone through the Steam threads too many people are saying for example “BOTW now runs badly now”, and that doesn’t help Valve engineers. Emulators - especially Yuzu and Ryujinx - are in a constant state of flux and numbers pulled from those are going to be side-eyed by the engineers.

People need to start posting more videos of MULTIPLE of their STEAM games running well on 3.4 and then running badly on the current 3.5 build with the overlay open. Valve needs to be shown data from a source they can 100% replicate.