It’ll tolerate a few hours no problem, mine’s been down for a bit over 24h and caught up fine.
I think it marks instances as down after 2-3 days, but I’m not sure if it’ll resume once it comes back up at this point. I think if your instance reaches out it might start pushing events again but it could also result in dropping the previous days.
It’s not the size, it’s a size to content/quality ratio. I’ll happily download a 500GB game if it’s got the content to match.
Uncompressed assets doesn’t bring higher quality visuals or content, it’s merely pure laziness or a scam to make people feel like they’re getting more for the outrageous price games have gotten.