[usefulcat]

The slowest number mentioned in the post--"32,562,683 signals [per second] with sender"--works out to about 31 nanoseconds. That's around half a dozen orders of magnitude less than an amount of latency that would be noticeable to a human.

[Gibbon1]

The little 50MHz Arm Cortex I'm using does one tick in 20 ns. Gate delay through old 74LSXX logic was like 10ns.