It seems there's a version difference in coin rush DLC packs. I don't know the direct cause but the only difference seems to be the load screen at the beginning saying "Please wait...". Some have it, some don't. So far, only Tegron34 seems to be missing it.

This causes somewhat of a problem with our current timing method. That's why it's going to be changed a little bit. From now on, timing starts when the screen fades into gold for the first time after starting the run. So, after the "Please wait..." screen but before the course showcase screen.

Every run is going to be adjusted to this timing method.