AT&T Fiber connection slowing down every night
So, I've had AT&T Fiber at my house for over 4 years now and it's been the best internet provider I've ever had, up until the past month or so. In the past month I can watch the speeds from my router (Amplifi Alien) to the ISP start dropping (Sub 100 Mbps) around 8 pm and the pings rise (~100ms) during that time too. I only noticed this speed issue because all my streaming services started to drop quality or completely stop for a few seconds to re-buffer. Usually it lasts about an hour to 2 hours (8-10 pm usually) and then slowly starts to ramp back up.
We've had our neighborhood grow quite a bit recently so I'm wondering if a larger number of people has something to do with it, but I've asked anecdotal questions of some neighbors and they've been seeing some of the same issues lately too.
I'm happy to run any tests and provide any data, just hoping to find the right outlet to get this addressed as the AT&T Support numbers don't really provide the right people to talk with for something like this. Thanks!