Of course there is already measurable lag from when your brain tells your hand and fingers to move, to when they actually move!
An interesting personal anecdote I have:
I damaged my back with bulging disc, which caused horrific sciatica nerve pain.
When I was able to walk again, I had some nerve damage.
This meant I had lag in my left leg!
I’d tell the leg to move instinctively when walking and there would be a delay. The entire walking movement of the leg was present, but just with a noticeable lag!
It was weird!
Eventually it healed fully, or I adjusted. Not sure which! :-)
An interesting personal anecdote I have:
I damaged my back with bulging disc, which caused horrific sciatica nerve pain.
When I was able to walk again, I had some nerve damage.
This meant I had lag in my left leg!
I’d tell the leg to move instinctively when walking and there would be a delay. The entire walking movement of the leg was present, but just with a noticeable lag!
It was weird!
Eventually it healed fully, or I adjusted. Not sure which! :-)