I give up. The same problem with disabled QMM, too... On the router is QoS disabled.
My pc has an usb wifi-adapter that have I plugged in the G750 and I could so talk on skype without any drop. It has to be the Broadcom chip. Not just me, but more users had also difficulties with it.
So I send it back to the RMA to change it to an another type.
Yes, you are right, this is a very fast chip, but as I said, this issue got I not only with my home routers, but with the hotel routers also.
If I would buy a new home router, this would only solve my network problems for friday-sunday, and the rest of the week (while I´m away, and really want to vidchat on skype) stays irritating.
I just talked with the service and they said, they build the same type in, if it doesn´t work, then they give me a bid about an another one. Dependent on this bid, maybe take I a nano N150 WLan-Adapter.
the notebook arrived back from the service. On the report stays: Wireless LAN function Error (N0FP05).
The new chip is the same type: 0C011-00110000, 802.11A B G N AC WLAN+BT4.0+HS
Here at home was the HDD uninstalled, but the service doesn't needed it, the endtest could they do probably with a live OS: the BIOS was swichted to boot up from the DVD drive.
I have downloaded now something, and under the download had I the max speed constantly, and could talk on skype for 50mins without any drop.
So my problem has now the solution. Thanks for helping by this issue.