First I'll state up front that I'm a comcast employee and these views are my opinions and do not represent any official stance or communication from the company. (Yes, I have to say this when I post).

Generally speaking if you do not experience slow downs in service at night, when you have most people online doing things, then you should not experience issues working from home. Obviously going to have situations where if you live on a node with a business who uses a lot of upstream capacity during the day there might be an issue that you normally wouldn't face but that would only cause issues when trying to send files.

Now if everyone stays home and everyone gets online and starts streaming 4K content all day. Then we might have an issue.