I can only choose INTERACTIVE as CPU Governor (Meizu M2 Note rooted)

I already give a try to SetCPU and now I'm using OPG Pro and when I try to put Powersave mode or another one, I can't. I can only choose the interactive mode. Why? Is due my processor?


Smartphone: Meizu M2 Note (rooted)
CPU: ARM Cortex-A53
Processor: AArch64 Processor rev 4 (aarch64)
Hardware: MT6733
Cores: 8
OS: Flyme (based on android 5.1)