Elan hw v.4 touchpads often sends touchpad release packet right after touchpad touch one. Most probably this happens due to PS/2 limited bandwith. Reducing of tap_min_queue size to 1 makes multifinger tap detection more reliable in this case. Reviewed by: gonzo Approved by: gonzo (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D10266