Shield tv help

[neochaos01]

Hi there, got my nvidia shield yesterday and have had terrible luck getting any emulaters to work, I know the device is more than capable as previous to the purchase I was running this on the Amazon fire tv 2014 edition.

So I'm thinking that it's a setting im using, or not using or its a issue with marshmallow. Can anyone please direct me to an up to date settings list for the shield tv or if you have a good working set up, I would be very grateful if you could share it.
I currently only have Tekken 6 and while the charactr models look okay, (not as good as the YouTube video I saw) the flooring is not there on most maps.
Any advise would be helpful. Thanks