Regularly throughout my ride I have periods lasting from 2 to 15 seconds where the avatar stops pedaling and loses speed (sometimes stopping entirely), even while my power and cadence readings from my trainer are continuing as normal in the TPV UI. This is especially noticeable on climbs, and this is often followed by the avatar jumping forward and backward on the road. If this happens at higher speed, such as in a pace group, my avatar falls off the back of the group like it stopped pedaling. This makes it very difficult to train in a group or do climbing workouts. This occurs at least in Flat Road and Terrain resistance modes, I'm not sure about ERG mode.

Trainer: JetBlack Volt V2, used for power, cadence and control. Connected via Bluetooth.
Computer: Mac Mini 2018, 3.6 Ghz Quad Core i3, 8 GB ram, Sequoia 15.3.2