Nexus 5X and Nexus 6 lagging in games and certain applications.

I don't know why but previous to having the Galaxy S6 I had the Nexus 6. It has serious issues playing Puzzles and Dragons without lagging. I also had issues with Brave Frontier. I don't understand why. It's hardware was plenty capable from what I understand. This was without Encryption. Fast forward to now. I've had my N5X for a few days and am just now getting around to setting it up. I've rooted, removed encryption and BL unlock. The phone is blazing fast... until I decide to play a game. Puzzles and Dragons and Brave Frontier are STILL laggy as all get out. What's the deal? They work flawlessly on the Galaxy S6. If this is going to be an ongoing trend I may need to send the N5X back and stick with the Galaxy S6. This is incredibly frustrating.

anyone have a fix for certain super nintendo or other controller buttons not working?

i have two controllers, one is a regular super ninendo controller plugged into a snes to usb adapter

http://www.amazon.com/Super-Nintendo...T1EYS6FFNRJ6YG

plugged into a female usb to micro usb.

http://www.newegg.com/Product/Produc...82E16812423075 (i have two of these)

it works fine on my computer and my note 2,

on my s3 on cm12, and my gf's LG gflex, the down and right buttons on the dpad arent detected at all.

this controller,

http://www.amazon.com/gp/product/B00...ilpage_o00_s00

works on the computer, but on my note 2, s3, and gflex, the X,Y,L,R buttons dont work at all. im using snes9x ex+ emulator, but they arent detected by the phone either because you can usually move around the home screen with the dpad and select icons.

does anyone know how to solve this issue or do i need to keep trying different controllers to find one that works