8.4 Pro and Smart Scroll topic

When I bought my 8.4 Pro I was quite dissapointed that the device does not have Smart Scroll available. However, today I found app called "Note 4 hidden features" which also works on my 8.4 and enables that and other hidden features :) just wanted to share this in case someone is unaware the same I was till today :)

http://forum.xda-developers.com/note...tures-t2963063

[Q] Scroll Lag on Lollipop topic

Hey has anyone ever had this issue with Lollipop(5.0.1) on a Nexus 7 2013, when I would start a game like Spiderman Unlimited or Sonic Dash, my tablet would go through serious lag after closing both games. The thing is that when I reboot the tablet, everything returns to normal, does anyone know how could I downgrade to KitKat 4.4.4 just to see if this is a bug with Lollipop?