mobile

So I got the S6Edge and its suppose to be lag free most of the time, but mine lags when typing and sometimes misses letters I type, also the touchwiz launcher sometimes freezes and switching apps lag and stutter, google chrome and the Samsung browser aren't smooth at all, they suffer from freeze and lag, what can I do?

Will flashing stock firmware remove lag?

Start ing to regret this phone, I paid 00 for it :( and there's lag..