I'm having the same exact issue. I have the Amcrest IP3M-954E cams. Only happens when the hardware decoding is enabled.
Currently working with Amcrest to see if they can figure out the issue. Will post back if we get anything figured out.
System:
i7 4790K, 16GB RAM
Windows 10 Pro
Latest...
I am having the same exact issue with my Amcrest ip3m-954eb, using hardware acceleration. Any motion gets "removed", is ghosting, and has the digital "noise" at the top of the image if hardware acceleration is on. If it is off, it works perfectly.