Yep, it is apparent here on a 730.
Quiet annoying (and scary) when using the phone at night!
Could you be a bit more descriptive on what you see and when you see it?
At random instances the whole screen "blinks" either white, or black.
It lasts for a fraction of a second and happens 100% randomly while using the phone.
It was apparent on WP8.1 and also on W10m, so it has something to do with the hardware.
As I said above, it is not something huge, but it is annoying when it happens cause it really hearts your brain..