I feel thats apparent, I also felt this initially and got back to stock, but then timed both bootloads and found comparable result. Infact I feel Since the time I rooted its taking bit longer to boot... BUT would not go back from ROOT achieved with such effort.
Take this link and test as many animations "BOOT ANIMATIONS"
Thank you, .
Yes this would require you to change the desc.txt file in the bootanimation.zip
from what it is in mine and like:
480 800 10
p 1 0 part0
p 0 0 part1
480 800 10 Width, height, frame rate
p 1 0 foldername Play 1 time, then pause for 0 frames
p 0 0 otherfolder Play infinite times, no pause between loops
to
320 480 10
p 1 0 part0
p 0 0 part1
after saving this file you have to zip back without compression. so may have to use something like 7zip from here
This change is reversible and you can get back to stock by
Running following commands in cmd promt with phone connected in usb debug mode through adb.
adb shell
ls -l /data/local
rm /data/local/bootanimation.zip
rm /data/local/android_audio.mp3
adb reboot.