Most likely it's not actual throttling, but your node is at capacity at night with everybody streaming these days.
What modem or gateway do you have? The newest ones support both 32 channels and the DOCSIS 3.1 channel, giving plenty of room to spread your data needs out. If you are using an older device, it may be limited to 16 or 8 channels, preventing the data from being spread out enough to avoid bottlenecks.
What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Is this a WiFi connection ?
Hey @andyross, is there any way that you could try bypassing your connection route to a different, less populated node? I feel like this is always done when you are assigned a WAN IP.
Supposing this were the issue, how can you test for it?
EDIT: I have signal stats in my thread
There is no way to change your node, other than moving. It's the group of homes/businesses all connected together, that then passes onto the CMTS. If that node gets congested, the only fix is for Comcast to further split it, which costs $$$.