It does depend on the content. Personally, if its for entertainment I default to x2 speed (thanks apple tv+ for including x2 speed instead of netflix's x1.5 hal

It does depend on the content. Personally, if its for entertainment I default to x2 speed (thanks apple tv+ for including x2 speed instead of netflix's x1.5 half measure); but for educational purposes I go down to x1.5 The downside is, after a few days of getting used to it, x1 content feels like slow motion.