Vector 3 Zwift Dropouts, Forerunner and Edge OK

Got my new V3. Outside riding coupled to FR935 and Edge 1030, all OK and stable. Both devices properly set to crank length 175. When I use Zwift, V3 are unusable as PM. Permanent Dropouts for my V3 and other ANT connected sensors. Zwiftalyser Shows permanent Signal losses and ANT recouplings. When I connect Elite Direto as PM instead V3, everything works great, no droputs, no Signal losses, also not for other devices.

Any idea why my V3 are Messing with the complete Laptop ANT Setup? ANT Receiver on USB exension, placed directly next to sensors.