Quick update: It wasn’t until I opened the original media files in Quicktime to compare them (hoping to see something I wasn’t seeing in PrP), and noticed that the camera files were compressed to h.264. Sure enough, in the finder I could see the files were substantially smaller that media from the other cameras at similar length. I imagine this has something to do with it.
I ran one of the compressed media files through Compressor and converted it to pro-res (I’m sure that must be like trying to enlarge a poor image in Photoshop), and it seems to stutter less in Premiere’s source monitor on playback and scrubbing. Not flawless, but better.
Anyone else having this problem might take a look at the media for compression.
“Ohh, a lesson in not changing history from Mr. “I’m My Own Grandfather”! Let’s just steal the damn dish and get out of here! Screw history!”
-Professor Hubert Farnsworth