Rekordbox Video editing/commenting tracks & audio+video

1) When I edit video track names or add a comment in my collection it makes RB very slow, grid dissapears, basically becomes unusable.

2) Also when I mix audio+video files, video starts to blink. It's ok when mixing video+video.

3) In last 3 weeks I've had 3 trackpad freezes when using RB. (sound continus to play till the end of track, only way to fix this is to restart computer)

Mac OS 10.12.5 (2014 13" i5 8gb RAM, 512SSD)

RB 4.3.1