So we just got 500mbps speed but it was already slower than my phone before. I just got a new wifi card didn't help my speed im getting on speedtest is 100 my phone is 400+. When i reset my pc it fixes it im so confused.
You need to understand that WiFi is just radio and it can have as many problems as any other radio channel. The one critical part is the number of WiFi devices are attempting to use the channel. And this doesn't mean the number of devices in your home. Radio is radio and it can go anywhere within range so it also includes the WiFi devices in adjacent houses, apartments, buildings, etc.