Thank you Jackson. I'm thinking that I may need to insert more joists underneath and screw them in to eliminate the worse of the noise where it comes ...

Thank you Jackson, I've used screws to secure the boards down. I will try using some more when I get the chance.

I've just built a deck using plywood base, marine plywood & wooden tiles. Is there any remedy for eliminating the creaking noise when I walk on it?Man ...