I've hit bandwith issues on 3 different occasions so far but it seemed to be at a time when a lot of people were experiencing the same so I'm hoping it was also to do with the platform itself.
I had no idea SP earned interest @adetorrent. How does that happen and can we see it?
I understand it as such: there is a block in a chain, it has got n number of space which is then divided between us all. Your cut of that space depends on your Steem Power. When you use up the given number n, you wait for the next allocation of the space in the next block.
Yes indeed, it does. If you don't power up for a while and just watch the SP, you can see the value increase slightly. You'd have to be paying close attention though because you also get SP rewards that add to the SP over time.
Yes also, when there's a lot of congestion on the platform as a whole, the bandwidth cap reduces for everyone, so it's even easier to hit that limit.