Thinking about buying this phone again after 4 months with the one plus one

Is the gaming still laggy on the device... I had it with 5.1 installed I think and it was laggy when I played games mortal kombat x or modern combat 5... It plays fine on my one plus one but people have been telling at my job that with the recent updates the phone is 10x times better than it was in April... Is this true? And has the enforced encryption finally been removed... Amazon is selling the unlocked 32gb for 350 no contract....