Although I haven't needed to use NI a lot, I'll align with Eric S. I quickly upgraded to the pro version for the PS plugin functionality and ability to use on uncompressed formats. It can also be included in PS Actions.
Unless I'm mistaken, I've always assumed that the NI PS plugin should be input file format agnostic, since it works on the decompressed or raw bitmap in memory, after the image imports into PS. - so NI isn't actually doing anything with the input file - PS is doing that.
My pro version with PS plugin, read a TIFF or png file opened in PS fine, you just need a fast cpu in your PC for big Mpix!! VOX