The untouched textures are definitely curious, but I do think that with most of the game taking place during gameplay with the isometric view and fairly zoomed out, it's a problem that only crops up during the full cutscenes. Otherwise, it's running well on my rig, even if it is a rather basic port to the PC.
I am absolutely curious to see the metrics for how it performs in both Switch profiles and on PS4, since folks with experience of the game on Wii U know that this gets real hectic at times and still boasts some of the most impressive set piece design of any game in the past decade. Even the opening mission with all of the falling buildings and the train losing more and more cars is way more dynamic than a lot of AAA games are now.