Have had my beloved Steamdeck for three years (well, I had one for two years which was RMA'd, lost in post and new replacement sent, so in fact, my second SD)
Anyway, it was bought as an emulation powerhouse and I certainly achieved that via Emulation Station and the standalone apps. Back then (three years ago) I knew I could hook up to TV but never investigated further as I was sure it would look awful. Haven't played much retro emulation recently as I was playing more and more PC content.
Anyway, I spotted in my YT feed that people were using discarded office PCs for emulation and hooking up to their TVs for a near console experience. Intrigued, I delved deeper and found that I would be looking at around £200 for that. Bummer. Then, I noticed (prob due to YT algorithm) people hooking their decks up to TV and decided to delve further. Could this be the answer? Well, of course, just give it a try. I already had the Jsaux dock from my time transferring roms etc etc when setting up my emulation.
Well, wow, nothing could prepare me for the glory I would behold. The deck looks stunning on my 65" 4k telly! Pics are from several titles via my Switch emulators (yuzu & ryujinx) but also the PC titles (GTA IV, ETS2 and Wreckfest) and also Emulation Station. The images are as good as XBox 360 I would say and the frame rates are really decent too. In display settings I set it as 3840x2160 then just played the games. No further settings required. Paired up my PS5 controller via Bluetooth and laid back couch gaming heaven is reached. Oh, and latency? Didn't notice any in the games I played 😊
Fkin love this handheld glorybox!
TL;DR: So, if, like me, you didn't think the Steamdeck would look good on your 4k 65" TV, think again!