GUI Performance needs some improvement yet

I guess that when they say that they “improved” the GUI performance did not mean this: https://www.dropbox.com/s/q6jdvssld53lkxl/IMG_1687.gif?dl=0

1 video track, 1 marker track, 5 audio tracks, no effects.
My old AMD K6 was able to make it better.

Of course it’s been improved, but I can’t imagen when I have a 16 tracks drums recording sliced. That’s gonna be epic.