Steam Deck: Complete First-Time Setup, SteamOS Tuning & Per-Game Performance (2026)
The definitive first-day guide for your Steam Deck (LCD or OLED) — initial SteamOS setup, the settings to change before you play, per-game TDP and frame caps, battery tuning, microSD strategy, Proton and compatibility, plus desktop mode and the tweaks we wish we'd known on day one.
