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.

Lagging Camera and Keyboard App.

I'm using a rooted Zenfone 2 551ML and i'm on stock Asus ROM, my problem is that when i take a picture using the stock camera app, it takes like 2 seconds to load before i can take a picture again. Also, while i'm chatting with someone over the Messenger app by Facebook, the keyboard pop ups lag sooo much that sometimes it renders the keyboard unusable since it's covering the letters. All software are up to date.

Does anyone else have this kind of problem, and if you have experience the same problem is there a fix for this?

i want to tweak nexus 5 performance.asphalt 8 airborne game still lagging

i rooted my phone nexus 5 with 6.0 xtrasmooth rom (13.10) but my asphalt 8 airborne game still lags. what to install to never lag?
SetCPU for Root Users -
ROEHSOFT RAM-EXPANDER (SWAP) -
GLTools [root] (gfx optimizer)
i saw somewhere these 3 apps but i am not sure they are the solution..
please guide me i am newbie

Any help fo lagging issue ?

My G4 H815 v10h lagging too much on keyboard or browsing internet or touch back button .... Any Help !