Thanks for this additional info! The switchable Intel/ATI graphics are probably playing a part, in combination with using a mix of internal, DisplayPort, and DisplayLink displays.
All the display technologies are making use of the main GPU (in different ways).
In a way, it’s good that it’s happening fairly frequently - we’ll be able to try things and know if it helps.
Two quick questions:
* When automatic switching was disabled, were you able to set it to use the higher power GPU (ATI)? That’s what we’d recommend if possible.
* If you temporarily disconnect the DisplayPort monitor to get that out of the picture, does it affect the flicker on the USB display at all?
Thanks for letting us know,