Reading about some of the things that you have done sounded interesting - like hanging on with a w/kg group. I didn't know about that. I was trying to use it to do workouts set by a coach and it just didn't quite work, the hills were in the wrong places, etc - although the coach is really into it. The ramp test was good - going up Box Hill.
My setup was fairly basic: laptop + a 19" screen, and no high end graphics, but I'm not really into gaming, etc, I think I prefer to just watch the numbers. Actually , that reminds me, another problem is that my eyesight wasn't quite good enough to see the Zwift screen properly without glasses!