I have a very strange problem with slow interconnection. It gets slow after each restart. When I reinstall back the driver, it gets back to normal and it becomes slow again after restart. So, I have to install driver after every restart. It happens on both wired and wireless connections. I checked with speedtest and it always gives me different result before and after reinstalling the driver ( about 9 times faster) at each restart. Thanks for any help.
I used only onboard wifi and no wired connections. Router is TP Link WR 841N.
Below is specification of my notebook.
Acer Aspire 491G
CPU : i7-6700 HQ
RAM : 8 Gb
HDD : Samsung SSD 860 EVO 500GB
GPU : Nvidia 940M
Wifi : Qualcomm Atheros QCA9377
Window 10 Education
I checked any network usage for about 10 minutes after booting and it was almost no network utilization. I run the speed test and It was about 4 Mbps. Below is the ipconfig at that time.
After that,I reboot back the computer and the speed is reduced back to about 4Mbps. The only things I noticed there that "Bluetooth Network Personal Area" disappeared in the adapter list after driver reinstallation and appear again after reboot and some changes in IPv6 address. IPv4 and v6 are set auto.