Rooted OnePlus two, installed Sandy kernel, now how to tweek it?

Hi,
I bought Oneplue Two, was running on the stock kernel for some time, then the battery life was way too bad. Then read a few posts, and suggestions to use the AK kernel. I flashed it, installed amplify,greenify to increase the batttery life but again, it reduced my battery life from bad to worse, now i am using Sandy Kernel, i need to know how do i tweak it, how to use synapse, how to use kernel auditor and what should i do to get good battery back up with out compromising the performance. And yeah would it reduce the heat on my device
PS : Noob in kernel and stuff please help:confused::crying:

[Question] MULTI WINDOW ON ONEPLUS TWO?

Is there any way to enable the Multi window on our oneplus two.
I had tried Xmultiwindow but its not working. So anyway to make it work? Or any other option to enable this feature. As I'm was using this feature on my old phone regularly it is important for me. Any help would be appreciated.
Thanks in advance.