I regularly experience slow Wi-Fi on my PC, generally for a few hours every few days. Other devices on the same network are fine. If I try using my phone as a hotspot for the PC (i.e., using cellular data) then I have no problem. I try the easy stuff (power cycling everything, turning all other devices off, rebooting the PC) with usually no effect. I'm looking for advice on how I can better isolate the cause of this problem.
I had this issue for about 12 hours last night / this morning, but now things are back to normal.
My slow PC setup (<1Mbps):
Windows 10 PC -> TP-link T-WN722N USB dongle -> wifi -> Apple Time Capsule -> ethernet -> D-link 2750-U router -> Internet
But my phone doesn't have the same problem (~11Mbps):
Android phone -> wifi -> Apple Time Capsule -> ethernet -> D-link 2750-U router -> Internet
And using my phone as a hotspot works (~15Mbps) so the PC/TP-link dongle seem fine:
PC -> TP-link T-WN722N USB dongle -> wifi -> Android Phone -> Cellular Data -> Internet
Another thing worth mentioning is that I am running Ubuntu Server 16.04 in a VirtualBox on this PC, although that's not new and I have the same problem even if I close the VirtualBox.
As I mentioned, this problem is not happening right now for me. I'm looking for advice to prevent this or more likely troubleshoot this for next time.
- What steps should I take to isolate the problem when it happens next time?
- Is it possible to troubleshoot this with my budget wifi dongle and router, or is it impossible without spending some cash on upgrading one or both of them?
- Should I install anything (Windows or linux) to help monitor my network to help troubleshoot this next time? How would I use this?