FPS issues with cutscenes AND gameplay seems to be gone, but wasn't looked into close enough, and there's no patchnotes to tell the details about it.
Topic on Talk:Saints Row: The Third Remastered
Didn't the patch just add the Payday 2 collaboration mask to the game?
Nope, fixed the cutscenes at least: https://www.youtube.com/watch?v=Sc9bO3ACAWk
Damn, i just tested the game and the cutscenes really run at 60 FPS now. This is pretty cool, we never had official support for 60 FPS cutscenes in SR The Third before and the fanmade CE/SpecialK methods caused some issues in both the original and Remastered. It's a shame they didn't even bother to post a patch changelog.