I hit this in 2.2.0 (but went back and confirmed same behavior with 2.1.2) on mac OS 10.11.6. At first it looks like it is very quick, but then when you try to scroll a beach ball comes up. At first may refresh in 0.5 seconds, but didn't take too many cycles to get to 5 to 20 seconds for beach ball to go away. Then for some reason one time might be really quick again, then gets slower. Maybe render of previous views of a report are being saved in memory somewhere?
In y test I was going back and forth between OpenStudio Results and EnergyPlus results, cross referencing data.