Review on 🔒 Enhance Privacy with the PrivacyDevil PD170W Screen - A 17.0" Display Privacy Filter by Adam Nelson

Using HP Zbook G3 15.6", Intel530 and Nvidia Quadro M1000M graphics cards, 1080p resolution, regardless of the side used (glossy / matte), I see blurry blacks Lines, this is clearly in conflict with the refresh rate of the screen, this makes it almost unusable, or at least not for long periods of time, I was expecting it to dim the brightness but not that it would produce that flicker/refresh effect Privacy wise it's also mediocre I'd say it obscures visibility by up to 30% for side view I'll return it it's not worth the money Apparently only 3M can build a proper privacy filter unfortunately it is it double the price.