So i never have a problem in the morning or if the truck sits for an hour but if istart the truck 3x or more in like an hour it will act like the battery is dead it will just turn super slow, every time. But like i said if i wait an hour to start it will start just fine. Is something getting to hot? I never have to jump it the battery apparently is not dying. I've checked voltage running and not running and it's fine.

 

It does sound like the starter has a problem.
The way you might confirm this is to get a current draw reading when cold then a reading when hot.
I believe the cold draw should be around 150 to 250 amps. If there is less draw when hot= high internal resistance.
If much higher current draw, ,, replace the starter.
It is always good practice to make sure the battery cables and connections are in good shape. Both at the battery and where they connect to starter relay and starter.