I know for monitors the dock specs are: 4k_60 or 1440_120. Display Port or HDMI, doesn’t matter.

I can verify I had it power my two PC monitors at 1440_120x2 I didn’t test variable refresh rates tho.

For me … I just plug the dock USB C top cord out/off and on/in again 🥹.

After the deck is booted and at steam screen or desktop mode.

Then for future boots, it’s usually okay. If not… Repeat step 1.

I blame CEC/HDMI control shenanigans.

Upon checking the Steam Display settings… You could try toggling the External display safe mode button to on.

I know on Desktop mode when it is docked, under KDE Plasmas’ System Settings > Display Configuration when docked, should have more resolution and refresh rate options. For the TV display

So I just noticed on my OLED solo on the screen it only allowed 90hz. Brb after more science. But there’s probably a way to keep the external at 60hz and the deck display separate.

So I have my TV fed through my sound bar, but it does let me make sure it’s 60hz and 4k ✅

For context having them the same refresh rate only matters if you were playing on a PC and streaming to the Deck TV set-up over Steam Play.

Sorry for any confusion. My bad.

On my C9PUA it just works with the dock.

Did you try locking FPS / Display settings to 60 on deck/TV?

AMD only does 60hz over HDMI because HDMI forums. Need Display Port for beyond 60hz.

On Bazzite I believe people use Firefox installed as Android app, so they can simply switch to it for game guides etc, while playing a game, in GameScope/Big Screen/GameMode™

I’m too lazy to test, because I just run it as my daily driver on my Desktop.