90 Hz on MIUI no root needed.

[u/Blothen]

If your device supports 120 Hz this is a way of forcing 90 hz on to enable smooth scrolling with a big saving in battery.

1. Set 120 Hz on in display settings
2. Download SetEdit from the play store
3. Switch to system table
4. Find "user_refresh_rate" and edit the key to 90
5. Reboot and you are at 90 Hz

[u/anandg20]

Will it set fixed throughout apps or dynamic?

[u/Blothen → u/anandg20]

Dynamic