Difference between ready-made blueprint and manually c++ implemented node?

[rokenrock]

Here’s a post from an Unreal Engine staff member explaining it:

What is the cost of using Blueprint instead of C++?

The overhead will be comparable to any other scripting language. So much slower than C++, but unless you’re executing a ton of blueprint code you’ll likely not even notice, because far less blueprint code is run compared to C++. Hope that helps. Cheers, Nick (Epic Games)