Windows 10 Network Issues - slows and glitches

My inteet randomly starts to slow down, and so every now and then I have to click and open the WiFi tab from the taskbar button, where I see there are only 1 or 2 networks shown, when in fact, there are actually close to 15. I tu the Inteet off, then back on, and then I see all the networks again- when I recoect to my network, it starts to be super fast again. I have to do this fairly often. My computer is about a year and a half old.

Sometimes, however, the WiFi button in the taskbar glitches, and I can't discoect from my Inteet, or coect to any other networks, or sometimes the WiFi tab won't even open. When I do CTRL+ALT+DEL and try to use the charms UI in the login screen, sometimes it works, however, most times it says "No network coections available" - at which point I have to restart and then it works.

Is there any way I can stop these aoying issues from occurring? Or download a network manager utility other than the terrible Windows one?