The Hisense U6G supports auto low latency mode (ALLM), but unlike the Hisense U7G or Hisense U8G, it doesn't support variable refresh rate technology (VRR). To enable ALLM, enable Content Type Auto Detection.
You can't lower your resolution to play in a higher frame rate like you can on the Hisense U6/U6N, but it still has a great response time and very low input lag, so it's a good gaming TV if you don't care about gaming at 120fps.
The Hisense U6H can remove judder from 24p sources. It automatically removes it from native 24p signals, like Blu-ray players or a streaming device with a 'Match Frame Rate' feature.
The Hisense U6N has a few accessibility features, and the settings are all available in the Accessibility section. You can enable Captions, High Contrast Text, and Text to Speech, to name a few.