Cook the bacon in a skillet for 8 minutes until crisp, drain it, and refrigerate it while the macaroni cooks.
Boil the macaroni in water with 1 teaspoon salt for 3 minutes less than the package directs and drain.
Butter a 6-quart crockpot and add the pasta, evaporated milk, whole milk, paprika, pepper and remaining salt.
Cover and cook on low for 45 minutes, then stir in the cheddar and Gouda by handfuls.
Cook on low for 45 to 60 minutes more until smooth and tender, then stir in three-fourths of the bacon and scatter the rest evenly over the top.