Hi!
I accidentally hit 'powersave' on my Kindle Touch, and it got very slow. Moreover, I was unable even to launch KUAL, it was saying me two different messages. Something like the app could not be launched, and contact Amazon support for help (sure, Amazon, can you please help me to run KUAL?
)
Then I just restarted Kindle from Settings.
About conservative, it works normal. I added to KUAL extension, so now I have 4 button for CPU control. Most of the times, when I press something, the 'pressed button' icon (inverted colors) does not appear (for example, I use KOReader button that replaced Shop on the Search Bar), although the app is being launched as expected.