Bluetooth keyboard K850 lacks responsiveness Win11 Pro 24H2

I have a MiniPC BESSTAR U820 with i5-8279U CPU and Win11 Pro 24H2.
The Logictech K850 Keyboard is connected to Intel Wireless Bluetooth 20.100.10.11.
The keyboard has a significant lag for the first keystroke of a sequence.

I set "svchost.exe" to high priority using the task scheduler at system startup as
proposed in https://learn.microsoft.com/en-us/answers/questions/3866346/bluetooth-devices-in-windows-11-lack-responsivenes?source=docs

Open Task Scheduler > Create Task.
Set trigger at system startup as admin
Under "Actions", use this as the action:
cmd /c wmic process where name="svchost.exe" call setpriority 128
(128 is "High" priority)

Is there a more specific way to set priority for process bthserv?
Does it make sense to set bthserv to RealTime priority?