External screen flickers on and off

I’ve got my new triple display docking station. I have connected my all three external screens. But find out that my HP screen now constantly flickers on and off. So it can work for 10 min ok, and then start flicker every 2 sec, then can stop flicker and work ok again for a while. Sometimes reconnecting hdmi cable helps to stop flickers. Other 2 Samsung screens works perfectly.
Screens: HP ZR22w and two Samsung SyncMaster 245b

I’m using beta driver for High Sierra on High Sierra latest public beta, Mac Book Pro 15’ 2017 highest spec.

Hello Vadik,

Thank you for contacting Plugable support! Sorry to hear about this issue. I’d be more than happy to assist you.

We have a troubleshooting tool that helps us find out what is going on in situations like this. Please plug the dock into your computer, then go to this page and follow the instructions there:


Please don’t hesitate to let us know of other questions.

Thanks again for contacting Plugable support and best wishes!

Joshua Henry
Plugable Technologies

Hi Vadik,

Since we’ve not heard back from you if you need further assistance just contact us at support@plugable.com