Transition animation scale set to off by default
Just update OTA yesterday and noticed that the samsung's TW 4.3 (MJ5) seemed to be very smooth, it was almost incredible the stark difference in UI lagginess (which was intermittent) between TW 4.2.2 and TW 4.3.
Then I realized that some animations were missing. There was no animation when opening apps, they just appeared.
I did not have developer options enabled before this (so it's not something I accidentally did previously), so I tapped on the build number to enable them.
Going through it, I noticed that transition animation scale was set to off
. Window animation scale and Animator duration scale were left at 1.