Sounds like you have some file problems somewhere. I'd do the
reinstall procedure in the Wolves of the Pacific forum. Especially when we're fooling around with mods it is possible to uninstall them in a different order than we installed them. This scrambles incompatable files, leaving a game with brain damage.
And you confirm what I see with SH4UBM. The video is no longer smooth, even though overall frame rates might be higher. I get the same jerkiness. If you display your frame rate you'll see it varying up and down so fast that most of the time you can't read the number.