There seemed to be a good deal of obvious looping in TMP. Probably a lot of mechanical noise in the background, but it wasn't as bad in later films.
The little bridge console videos for TMP had little clattering, continuous film loops inside them, and before ST II started filming, Nick Meyer had them all transferred to videotape so they could be quickly rewound for retakes, and they wouldn't chatter so much and forcing most bridge dialogue to need to be re-looped.