Everything fine "just a bit laggy"

Hey :)
After installation everything works now fine.
First APKs are installed, Youtube and Netflix - Audio is set to browser etc.
Only thing that bug me is that it seem that the audio sometimes get laggy and scratchy like if the pi is throttled by performance.
Is there a way how to best overclock the pi running Teslaandroid?
I m currently running at mostly 48-52°C