Sounds like a network problem.
Funny my colleague told me today that her new Macbook Pro acts this way at home. She got the computer last week and we are using Indesign 2015. She is on a holiday now for two weeks now so I can't investigate this any further at the moment.
Is your internet connection wireless at home? Have you tried using an ethernet cable at home to connect to your router?
Likely trying to establish a connection to an inaccessible network location on the work server.
That could be the case but my colleague is not using her new computer any different from the old. She's been using a Macbook Pro from home for the last 5 years or so.
Thanks so much for the feedback, everyone.
The inaccessible network location on the work server would not apply to me since I'm not connecting to a work server, just my wireless internet at home. I have noticed that the problem is much worse at night, but can't figure out why.
Like Andersson's colleague, I am using a newer macbook pro, but I didn't have this issue the first 6 months of using the upgraded machine. I haven't tried an ethernet cable, it might be a good solution for the time being, but I'd like to find a solution that fully resolves the problem.
Thanks again and I look forward to hearing any further insights.