You could start by just experimenting with the z-axis movement speed in your slicer. The printer will move at the slower of either the slicer setting or the limit in Marlin.

What kind of printer is this, or at least what kind of z-axis drive does it have? I know MakerFarm printers with 5mm threaded rods for the z-axis can't be driven faster than 2 or maybe 3 mm/sec. I've seen slicers default to settings a lot higher than that.

The Marlin feed rate limits are in the DEFAULT_MAX_FEEDRATE parameter, with z-axis being the third value in the matrix. The last revised Marlin github baseline I looked at had a default value of 5 mm/sec on Z.