volt-gui has been released in version 2.3.1.

After the layer internals work in version 2.3.0, this release makes a targeted adjustment to the Frame Limit Offset: its range grows from -10/10 to -20 to 20 (in increments of two).

Expanded Frame Limit Offset range from -10/10 to -20/20 (in increments of two).

Came from a user on a 240Hz display who caps at 240 and wants to land on 226 for the VRR window.

Source: GitHub