Some #Nintendo #3DS emulation tips on #SteamDeck:
- cap framerate to 30 FPS (unless the game has a higher framerate than that)
- set the TDP all the way down to 3 W
- set GPU clock all the way down to 200 MHz
- disable SMT with PowerTools, use only 2 threads
- set max CPU clock to 2,000 MHz
- downclock the system's memory
Should get you about 6 hours of battery life, maybe even more!