I use T-Mobile Home Internet. On my phone I was getting 200+ Mbps. But on my PC I was getting only 20-30 Mbps.
I suspected that Kamo had something to do with it. And I was right.
After uninstalling, my download speeds were like those on my phone.
BTW I read here that Kamo hides itself from the Windows uninstaller. I just used Ccleaner to uninstall and there was no problem.