This is something I always struggle to get my head around and to be honest it's not something I have spent a lot of time learning due to the expectation of the hard fork changing it. I heard that the limits will change to 15 minutes? I think that would be good as I frequently would upvote more posts but i find them to early and always intend to go back but sometimes i forget or it's lost in my feed and I can't remember which I'm supposed to be voting lol.