My regular speeds are 80-100 MBps download and 14-15 MBps upload.
During the evening starting around 6-7pm and ending around 11-12am, when I actually use the net, my speeds drop drastically to 0.5-2.5 MBps download and 11.9 MBps upload. This is way off what Xfinity says my speeds shoudl be.
Also my latency will randomly spike from 14-30 to 120-300, which makes it so I can't play the online games I would like.
Is anyone else experiencing this issue?
What can I do?
Anytime you see upsidedown speeds (upload faster than download) it's an indication of a router issue. The first thing you should do is powercycle your equipment. See the troubleshooting guide.
If that does not resolve the issue:
If you have a separate router and modem, bypass the router and directly connect to the modem via ethernet. Powerecycle your modem every time you connect a new device to it. If your speeds are fine at the modem, reset your router.
If you have a gateway (router/modem combo) reset the device back to factory settings.
If you still need help, post your equipment details and signal levels (screenshots if possible) please.