Latitute laptops - Audio issues

Hello community.

We have several hundred Latitude laptops (5500 - 5550 and 7400 - 7450 Win 11 23H2 and 24H2) in use. For many users, regardless of the model, we have audio problems with our softphone client SwyxIt and Teams in connection with Jabra Evolve2 65 headsets + Jabra Link 380a and c dongle. At the beginning of the conversation, the other person can hear us very quietly. Only after about 10 seconds does the sound reach a normal level. Teams and softphone clients are up to date. Driver and firmware versions (Dell Command, Jabra Direct...) are also up to date. We have already tested all audio improvements in the Dell Optimizer and in the Windows settings and deactivated them, without success. Reinstalling drivers did not help either. Interestingly, the problem does not occur if the sound settings are simply open in Windows. Does anyone have an idea how we can solve the problem?