[brazen1]

I used your code with no alterations and having done that - I now have slow frame rates when using the built in player - for anything that is not mpeg2 based.

here is the log :  https://paste.ubuntu.com/25745572/
with log running I could see I was getting 10 fps .

I checked audio as I know that can cause issues - I fixed some minor issues there - but problem still remains .

I removed the playercorefactory , that did not change anything, so it would seem that a setting has changed , but I dont know where any other place I can look?
I have a dual boot systen with windows 10 , and the untouched version of kodi there - works fine.

None of the codes alter any settings at all.  They simply add a player(s).  Deleting any codes you added leaves you where you started with nothing altered that could lead to any of the problems you describe.