Why didn't Data go into high-speed mode more often? He did so when the ship was in severe danger of being destroyed in "The Naked Now," and also did so in an attempt to save Lal's life.
Not too many times besides that.
Possibly Data refrained from doing this in order to appear more human, since his goal in life was to become human. That's all I can think.
Please don't answer 'budget,' or 'writers,' etc. I don't consider those explanations valid. I like to think of in-universe answers.
Thank you and have a wonderful evening.