Sounds like a puppy being a puppy.. "Oh treats!" "oh tug!" "Oh ball!" Sometimes you have to find what his drives are! Maybe the treats you have just aren't it for him. I know of only one treat that Titan will actually work hard to get. Same with toys.. some like tugs, some like balls, some like frisbees, some just like interacting with YOU more than anything else.
The only rhing he really likes to do with me is chase me around the house. If we are outside he's off doing his thing.