Can you try r3.2 and tell me if it lags? I want to see if it's still lagging if you go back to r3 after it starts lagging in r4. (https://mega.nz/#!icUTVCYQ!KLgm9uhYxFBzZ6AZT1Z7baqQh-QF_CshiOm6nDEc_i0)
Yeah it's still lagging after 3.2
