I had a MacBook running in a dock at 4k 60hz and had all kinds of problems losing sync. I spent fortunes on all different cables from Amazon none of which cured my problem. Until I discovered Lindy.
LINDY 1m DisplayPort to VGA Cable
Lindy 1m DisplayPort 1.4 Cable Anthra Line
Lindy Electronics Lindy 1M Active Displayport To Hdmi Cable With Hdr. Cable Leng
Lindy 1m Active Mini DisplayPort to HDMI Cable with HDR
LINDY 1m Active DisplayPort to HDMI Cable with HDR
LINDY 1m Mini DisplayPort to HDMI 10.2G Cable, Black
