I have had my stick for a good few months now and it has always worked perfect on my tv. I moved it into my office where I have a dual monitor setup (both high end LG 1080p 50/60hz monitors. The stick will display perfect on one monitor but flickers on the other. All other devices work perfect on both. I have tried all of the common fixes and most of what I can find on here. Stick is plugged in direct to monitor with first party power cable and wall adapter.
Try holding in the little reset button on the side of the stick, while it is powered and connected, for 30 seconds.
Then set it up again, and see if the flickering has stopped.