I watched the rip yesterday. Looks like hq_filter screwed up some scenes with fog + light rays passing through it.
I'll have to rip it again. I'll try removegrain + some sharpening. Maybe that works better.
See the stripes in the background? That's hq_filter's doing, the version without filtering doesn't have those.
Thought this might be of interest to fellow rippers.
On the other hand I've tried the same filters on a VHSRip I'm making and they did a great job.