The program is not usable for animating. I get 270 fps when I play walk cycle for a character without the timeline in view, and 10!!! fps with the timeline in view. I have tested the program on 3 different computers, and this issue is present on all of them, so I guess this is a problem for everybody.
WE USE THE TIMELINE WHEN ANIMATING, AND ANIMATING AT 10 FPS PLAYBACK SPEED IS NOT USABLE.
I have submitted this as a normal bug report as well, but I was encoraged to post this in the feedback tracker.
Comment and vote if you experience this issue. I feel that a fix for this should be top priority...