Thank you again mashingan.
So is this something acknowledged / planned to get fixed? Or is it me who is reporting it for the first time?
I already tested it on multiple systems, with exceptional configurations, GPU acceleration on / off, and SVP 4.0 has extreme haloing, it cannot even touch SVP 3.1.7's quality with exactly the same settings. Specifically:
These settings bring SVP 4's video quality close (about 75%) to SVP 3.1.7's video quality. Mind the difference in the settings "Motion Vector's Grid" and "Artifacts masking". And although it is close, haloing is still very unacceptable on SVP 4 in certain scenes, where the haloing effect is so extreme, that changing settings barely makes a difference. The effect persists 10/10 times on fast motion scenes.
I did try a vast number of changes in SVP 4's settings, I actually tried almost all relevant combinations and SVP 4.0 cannot retain an acceptable video, in terms of haloing, without resulting to much less smooth video. In reality, going for the lowest smoothing options; 2m , 32 px. Large 0, grid step disabled, still produces minor haloing.