One of the most difficult situations you will encounter when playing to a click track is maintaining slow tempos with a cohesive feel. Let the click help you by subdividing the tempo. This is a practice many conductors automatically employ when the specified tempo is below 60 bpm.
Subdividing simply involves doubling the rate of the click. For example, a 60-bpm song’s click would play at 120 bpm, or eighth notes instead of quarter notes. Many drum machines and groove boxes, and most DAW software, allow you to select the note value of the click on a per-song basis, so you can subdivide the slow songs and still hear a normal quarter-note pulse on uptempo material.