I've been having the same issue. It's usually been so intermittent and infrequent that I've been able to just ignore it, but it's gotten to the point on Voeld where it's actually unplayable.
Here's a video I took of the issue.
Interestingly, the reason so much of the video is on the menu is because the menu was flickering a red tinge constantly, rather than black, and the contrast was less good (more colour banding). None of this was picked up by Nvidia Share, but the black flickering was.
I read that some people are fixing it by applying Temporal Antialiasing (AA was previously off entirely), so I tried enabling it. The result was this.
I mean... technically the entire screen is no longer flashing black... I wouldn't call it a fix, or even a workaround, though.
Had this issue, but also had this issue with many frostbite engine games, simply drop Effects Setting from Ultra to High and it stops doing it, i switch from ultra to high for the mission taking out the 3 ports / docks, then after i left the area i set it back to ultra, had the same thing happen to me in BF1 single player and Dragon Age Inq. ☹️
