rekordbox 4.2.1

hello,

I use rekordbox 4.2.1. performance for my ddj-rb controller. I pushed some keys on my laptop per accident and the result is the waveforms are much larger, to large for mixing... They pass by so fast and I wan't back the original setting!? I've tried resetting the settings menu but it doesn't work, can somebody help me please, it's itching to make a new mix but under these conditions I just can't.

Thx, Arnold