Upload Speed Dips below 20

@XfinityMatthew The steps i have taken was to replace my own router, previously it was a Arris surf something, but then i got the netgear cm3000 and for my Wifi i have a netgear Nighthawk R7450, and as for tech visits, i honestly cant remember when the guy was here last. all i know i used to be able to stream with no interruptions from this provider, but suddenly i couldnt stream cause yall no longer supported my arris i had, so i replaced it. During most of the day i get 25-30mbps of upload which is wonderful for streaming but its the night time im trying to do, i do apologize for getting back to you late, ive been having issues with xfinity websites and app for a while not letting me do stuff i managed to get it to work now, thank you for your time but between 8pm sometimes a bit earlier through 2am est my speeds drop randomly to 5mbps or lower and it makes it impossible to stream

@XfinityMatthew​ This is what my speeds look like on my phone, i get better downloads speeds on my pc. im only worry about my upload speeds when its night