The Switch 2 will support Auto Low Latency Mode to enable streamlined and smoother gameplay on specific TVs.

Nintendo's new Switch 2 console has a bunch of new upgrades, and the biggest one is performance. Thanks to a new custom chip from NVIDIA, the Switch 2 can deliver 10x the graphics performance than the Switch 1. That means 4K gaming and other modern NVIDIA gaming chipset features, including raytracing, DLSS upscaling, and what appears to a Nintendo-specific version of NVIDIA's broadcast technology.
We know the Switch 2 can support gaming up to 4K resolution and 60FPS (Tears of the Kingdom runs at this rate), and now we have a small bit of new info about another convenience feature that will help with performance: Auto Low Latency Mode. With ALLM, the Switch 2 communicates directly with the TV or display and tells it to turn on Game Mode for better gameplay.
The info was spotted on Nintendo's website:
Connecting to a TV is easy - Compatible TVs can automatically turn themselves on when they detect the Nintendo Switch 2 system powering on while docked. The system supports Consumer Electronics Control (CEC), where the TV automatically detects and changes to the correct input. And with Auto Low Latency Mode (ALLM), you can even have your compatible TV automatically change to its game-mode setting.
Nintendo has also confirmed the Switch 2 can run games at 120FPS in TV Mode, but the device caps out at 4K 60FPS, so expect any games that run at 120FPS to have a drop in resolution.