I can be slow sometimes but if you told me I was I'd gladly try to prioritize. A lot of people seem to be 'intentionally' slow by which I mean they can't keep up with one character in the game but still play a few and are in a few games. I don't mean a tag every day or so either I mean unreliable and slow always and they wouldn't be quite so bad if they weren't playing so many. I just want to know how they get meaningful CR at their speed.

The fastest and most 'reliable' are some of the worst who give the least. I'd suggest looking around and find someone who gives tags your like and try from there. It's worked for me. A word of caution to avoid mod characters and most of their canons and friends in those canons. They're the worst offenders.