RB 6.7.7. Waveform display has hickups

Hi all,

just migrated from DENON over to Recordbox and already had my first gig on my new FLX10 in combination with a brandnew killer-Notebook: Intel i9-13700 and 32GB plus RTX 4070 external Grafix! So CPU Power should not be the issue. 

The issue is that after 10 tracks the waveform display has hickups and stops for some milliseconds to then jump back in sync. Fortunately these hickups have no audible effect. What can I do to have a fluent waveform display?

Cheers from Germany
DJ-Archi