Run app takes very long

Hello everyone,

My name is Mike and I just started the first few tutorials of the free online course. 

I'm using the Mendix Modeler 6.6.0 (as advised for same interface as tutorials)  but every time I make a change and save>run my app it takes a few minutes, is this normal because in the tutorial it only takes a second or two.

My apologies for not using any tags but since I've only just started I would probably use the wrong ones anyways.

Thanks in advance.