Okay, kids, I am fresh off of a weekend of messing around with my camera in various low light and almost low light situations. Youth wrestling tournaments, early morning photos, late evening, dark restaurants. I was deliberately trying to find situations to test my Note 4 and capture clear shots with low light and motion...and I couldn't do it.
I deliberately tried to capture photos in as close to "point and shoot" situations as possible. My thought process being, the average person is A) Not going to possess a lot of knowledge about basic photography principles (how to adjust for light and shadow, etc) and B) they don't WANT to have to deal with those issues, they just want a good "auto" function to capture life spontaneously. I really thought I had been doing that, but as I looked back on all of my photos, I had posed shots, sleeping dogs/cats, or other good low light subjects. In other words, the reason I have been defending this camera is because I had already adjusted to it's weaknesses. As a somewhat experienced photographer I just know how to adjust for the circumstances and how to capture subjects in various situations with the equipment I have (or don't have) on hand.
I can't defend the Note 4's performance with low light motion any further. Even with forced flash, the blur is still present.
The one thing I was able to do to reduce/improve my results with low light motion was adjust the ISO setting from auto to 100. This resulted in a very dark image, but it was a good still. I was able to salvage a decent image out of it using snapseed. For those of you (like me) who aren't so disappointed in your Note 4's camera that this is not a deal breaker, Snapseed and other photo editors can definitely be your friend.
Here are some examples of the results I'm talking about:
Here is the original image, ISO set to 100, no flash, got reasonable image, but overly dark picture.
Same image after messing around with it for a few minutes on Snapseed.
Typical result in the same light conditions, auto ISO, auto mode, force flash.
Frustrating results with motion, considering how good the results are in low light if there is no motion.