Rekordbox waveform blurry and glitchy

Hei :) i saw that some other people run into this issue. When i start Rekordbox and load a track into a deck (whatever deck), the waveform is blurry and also stutters. I have tried everything... reinstall Rekordbox (deleted configuration files, etc), load all kind of tracks, but to no success. I have to restart Rekordbox, usually for 2 times, and after that everything goes well. I am getting desperate with this issue, because of it's randomness ( sometimes i have to restart Rekordbox for one time, or two time, or even three time to display the waveform correctly).

Please help :)