It's a regular door magnet, but my dryer is 10 years old or so, maybe it's slower than newer models. Maybe you could swap out the magnet itself with a rare earth magnet?
These are the ones I have below. My guess is you are using the non-concealed door magnets. I'll try to get a rare earth magnet and see if that makes this contact any more sensitive. Thanks for the information.
Door Contacts
Michael