Is a DLL slower than a static link?

Question

I made a GUI library for games. My test demo runs at 60 fps. When I run this demo with the static version of my library it takes 2-3% cpu in taskmanager. When I use the DLL vers

Answer 1

You will have the overhead of loading the DLL (should be just once at the beginning). It isn't statically linked in with direct calls, so I would expect a small amount of overhead but not much.

However, some DLLs will have much higher overheads. I'm thinking of COM objects although there may be other examples. COM adds a lot of overhead on function calls between objects.