As you increase the ohmic resistance of the sparking system,
either by adding a resistor to the spark plug
or adding resistance to the wire,
the “burn time” of the spark increases.

Having a very intense spark with high current but for very short time,
by experiment has been found to result in more “misfires.”

Lowest misfire rate happens at the compromise where the spark intensity is “good enough” and when the time the spark endures is relatively long,
by experiment has been found to result in lowest possible misfires rate,

At high rpm a single coil does not have time to “recover” before the next cylinder fires.
Misfire rate at high rpm can be reduced at by having a coil for each cylinder.

Misfire rate can be further reduced by having two (or more) spark plugs per cylinder, each with its own coil.
( 5.7 Hemi set up)

Seems excessively crazy,
but an MIT student wrote his Master’s thesis about finding how many spark plugs per cylinder were needed to reduce the misfire rate to zero.
He got up to 16 spark plugs on a single cylinder and was still finding improvement.
The single cylinder, variable compression ratio, side valve design, CFR engine he was using has a combustion chamber design that lacks modern “overhead valve” engine design with quench, swirl, or tumble.