Phone restarts & Music stops working

Got my new Note 5 last week and rooted it, the guide I followed worked but someone in the comments said their phone was restarting occasionally especially during phone calls (saw this late)

So, everything went fine and now some time the phone will just restart on its own for no reason, it was literally sitting on my desk and decided to restart, it has happened a lot of times and also when I plug my headphones in to listen to music and i put it in my pocket it just gets stuck and i hear a constant sound and then it just cuts off and phone lags for a good minute and everything goes back to normal except the music sound, even after its turned up and music is playing i dont hear anything, i have to restart my phone for it to work again.

This is on a Canadian Bell Note 5 (N920W8)

So my question: Is there anyway to prevent this music/restarting problem while still maintaining root status?

Thanks.