Keymander 2 keeps loosing dualshock 4 controller

[I've posted this in the wrong topic before, sorry.]

Hello everyone,

I am trying to get the Keymander 2 to work with my ps5.

Setup: Playstation 5, PS4 dualshock 4 controller, wireless keyboard and mouse from Dell (KM741)

Problem: Everything works just fine for a while (maybe up to 15 minutes). But after some time, no inputs are registered anymore. Neither from the controller (via USB through the Keymander) nor from the k+m - without showing a message, that anything has been disconnected. If I shortly disconnect the controller cable and reconnect it, the ps first says that it has been disconnected and then reconnects - and everything works again.

I hope you can help me fix this.

Kind regards