Hi,
I am using ESET Internet Security version 11 with a valid license until Dec 20, 2019 on a Dell Inspiron 5567 Core i7 with Windows 10 Professional installed. My router is Huawei HG630 V2. Recently, I have upgraded my ADSL from 4 Mbps to 16 Mbps but on WiFi connection I get 4 Mbps tops. When I connect directly through cable I get 16 Mbps. I perform the speed tests on speedtest.net, which are pretty consistent most of the time. I uninstalled ESET Internet Security and connected on WiFi and the speed was back to 16 Mbps. I reinstalled ESET and tested on WiFi before doing a restart and speed was still at 16 Mbps. Right after the restart, maximum speed was back to 4 Mbps. Connected through cable and speed was back to 16 Mbps. On other devices connected to my WiFi where non ESET security products are installed I do not have this issue.
Any suggestions on where the problem might be?