I think they've tried to give more control over it. You can tweak the various options, or go for the big power saving mode. The old performance mode is now the enhanced performance option - I'm guessing for battery saving, assuming it runs as normal generally, then bumps up the performance for apps that need it.
You just configure what you want when you press the power saving icon, there is no specific separate power option which is better. last time it played a animation each time you entered power saving and when you switched to 60hz from 120hz would stutter now that's fixed and is instant. furthermore about the animation is non existing which is better and faster. before we had to wait till the bar hits 100 to use phone or it wouldn't go to power saving, now it's instant. ygm
phil212 mid power saving is the normal here rn, enhanced processing is the old high performance. high power saving puts the phone into complete lockdown so you can't use social media's and only can text and call