Thanks for the great advice Robb.

I actually gave 2nl FR (as opposed to the 6 max I had been playing) a proper go today and was ASTOUNDED at some of the calls people were making. I was up 2 BIs within a couple of hours. It would have been more but I got sucked out on when a donkey called my AI with a lower 2 pair and caught his Full House on the river. Anyway, the standard of play felt very very easy, so I may have answered my own question....