"Field order | Use Field Order from File: Upper Field First" works but isn't satisfying.
The video isn't "interlaced" anymore but not that sharp as well, of course...
My suggestion: Don't work with psf.
What shooting format was FS-100 set to? 1080p30, 1080p24, other?
Most cameras don't output 1080p over HDMI, they send out 1080i - did you try recording as 1080i?
The camera was set to record 1080p50.
But as far as I know it doesn't make any difference for the KiPro what your shooting format is.
So beside the psf-mov-files I have the avchd-files in 1080p50 now.
It was meant to be the backup but as a matter of these psf-problems I work with avchd right now. They look better than the not right interpretated psf-files. As long as I do not make to much color corrections I guess.