It’s definitely known, and it’s always been jittery over BLE for me.
It’s been mentioned quite a few times here in the forum and on GitHub, but I don’t think anyone’s made a specific GH issue for the modules over BLE.
I think it’s kind of expected over BLE though. As you can see from my comment over in another thread, the dongle’s page in the UHK Shop acknowledges the responsiveness issues: