[artifact]r.screenpercentage white pixel artifacts

When using r.screenpercentage white pixels pop at random location rapidly across all frames and are especially visible on black surfaces.
Here’s a screenshot where we can see a couple of them and while it looks OK on one frame it doesn’t when they pop up randomly everywhere at runtime:

http://puu.sh/bmFuB/abac4ecce8.jpg

Is this a side effect of the tech or is this something fixable?

Any change to get some feedback form Epic on this?

Is there a way we could perhaps change the color of those pixels ? In most cases black ones would make those dots almost invisible.