I got a new RPi Zero W :)
Fresh installed Raspbian Jessy on a new 16GB SD.
All went good, including connection to wifi, and Logitec 2.4GHz mouse and keyboard.

after that- from time to time, screen flickers for about 1s, every 2-3 min.
I tried you set a defined screen res - no help.
I even set display driver- to No GL ( basic ) - no help

Any ideas what may cause it ?