The connection with Galaxy book pro4 and external monitor is unstable.

[Bang9dong9]

I don't know why.. 

My galaxy book 4 pro is very unstable when it is connected to external monitors. I have 3 external monitors, it has the same symptom. 

The only way to solve this issue is to reboot.

Especially, when it is connected with 'c to dp' or 'c to hdmi' , it gets very serious. 

I didn't suffer from this from Macbook. 

I don't know it is the problem of thunderbolt, or the problem of galaxy book... 

Is there someone who has solved this issue?