I recently moved into a new apartment with 1 Gbps internet, but I've noticed that my PC's WiFi is significantly slower than my iPhone's when both are connected to the same network. I've got a new WiFi 6 adapter, yet I'm only getting speeds around 30-50 Mbps on my PC while my phone hits 300-500 Mbps in the same room. Both devices are on the 5GHz band. I disabled my firewall to troubleshoot, but it didn't help. When I connect my PC directly to the modem via an Ethernet cable, I get speeds of 900 Mbps+, so it seems like the issue isn't with the internet or the router itself. Unfortunately, I can't set up a permanent Ethernet connection because the router is located a few rooms away in the laundry room. Can anyone help me figure this out?
3 Answers
Have you tried checking the actual signal strength with "netsh wlan show interfaces"? This can help confirm if your new adapter is functioning correctly. Also, consider disabling QoS on your router; it might be interfering with your speeds.
Cheap WiFi adapters often deliver poor performance despite claiming high speeds. What model did you get? If it’s low quality, that might be your issue regardless of other factors.
I got this one: [link]. It was on the cheaper side, but lots of folks said they’re getting over 500 Mbps with it.
First off, make sure your WiFi adapter is plugged into a fast USB port. If you’re using a USB 2.0 port, that could bottleneck your speeds. Ports on the back of the motherboard usually give the best performance, so check that!
I double-checked, and it’s plugged into a USB 3.0 slot, but no change.

The signal strength is about 82%, which seems decent. I’ll definitely try disabling QoS next!