
If you have any suggestions or guesses on what might be going on, please comment. For comparison, my laptop has Realtek PCIe GBE Family Controller and Intel(R) Dual Band Wireless-AC 7260 and the Windows 10 laptop has This Killer Ethernet Controller and Intel(R) Dual Band Wireless-AC 3160. I am at a loss what other software solutions I can try and I am worried that there is something wrong with the NIC or adapter (which can be a pain to change in a laptop). Finally, I tried resetting my network configuration by running netsh winsock reset catalog, netsh int ipv4 reset reset.log, netsh int ipv6 reset reset.log.Once I pick one, I will do a scan with it too, but it doesn’t look like it’s malware that it is causing the problem. I am currently in the process of picking a new antivirus. I then downloaded Malwarebytes but it didn’t find anything either. Before uninstalling the old antivirus that I had, I ran the scan but didn’t find anything. I also tried running several speed tests and monitoring the number change, and the dynamic was the same to what I observed on the Windows 10 laptop. All of them are either chrome, svchost, or System, and the numbers look very similar to those I am seeing on the Windows 10 laptop. In Task Manager’s Resource Monitor I checked the processes under Network.I tried disabling and eventually uninstalling the latter. All PIDs were either Chrome or the antivirus. I ran netstat -o and checked each PID to make sure it wasn’t anything suspicious. Making sure that my network drivers are up to date.Here’s what I’ve tried to do so far to troubleshoot the problem: I get the results regardless of whether I am connected through WiFi or Ethernet (tested with multiple cables). Specifically: shows me 170+ Mbps, shows 70 Mbps, (HTML5 based, arguably the most accurate) shows only 15 Mbps.

Moreover, I also get very different results depending on where I measure my speed while the other devices get almost identical numbers on all websites I’ve checked. laptop has a significantly slower download speed (~15 Mbps) than any other device (~100 Mbps for the phones, ~120 Mbps for the Windows 10 laptop). I have four devices, Windows 8.1 laptop (mine), Windows 10 laptop, iPhone SE, Android phone, connected to the same network and the Windows 8.1.
