Seems the secret is in the amount of open applications you have i.e processes running in back.
I made 2 tests with Antutu one was when I opened everything I have on phone, camera EVERYTHING, the next was after downloading the booster program Antutu suggests(Clean master + 1 Tap boost).
I attached the screenshots as well. With all open apps, I scored 42K, cleaned out, boosted and just having antutu run I made a whopping 37K
Yes, I'm well aware that my batter levels are low, don't know if it'll influence it or not. I don't really do these tests, first time on this device, was curious
I can redo again with full charged though it probably won't make a difference.