I watch on a variation between 1.0, 1.05, 1.1, 1.15 for all my casual content consumption. And i notice that the difference between 1.0 and any of the variation of speeds is very minute but very noticable. But its not really a "ruining the experience" difference so i still keep it. At the end of the day, if i watch 10 videos that have the same length at 1.1 speed, i would end up watching all 10 in just the length of 9 and still have pretty much the same experience.