As you can see TrimensionDNM did frameblending at "hard" frames: two contours of windows, of mans, of all.
Early MVTools script tried to calculate intermediate positions of the objects and have many distortions of contours so called "waved artifacts" or "contour artifacts".
And SVP 3.1.2 looks not so bad at your two screenshots: no frameblending and only a little waved artifacts.
We work from version to version of SVP to get more quality while interpolating.
To solve your problem you can choose less artifacts but less smoothness.
Try change Frames interpolation mode to 1m or to 2m.