ATC for IFR flights too strict about passing within certain distance of waypoints

[CaptBong]

Is there a config file somewhere with a value that controls the maximum distance from a waypoint that ATC requires you to fly within for ATC to be satisfied that you passed the waypoint?

 

It seems like the distance is currently +/- 2 micrometers from the waypoint lat/long (only a slight exaggeration).

 

If you have waypoints that are close together, like in a STAR/SID, sometimes the A320 can't turn fast enough to perfectly touch the waypoint. Then, ATC tries to make you do a 180 to try to hit the waypoint again, which is cruel and unusual punishment. I don't know what the real-world tolerance is, but a distance of 1-2 miles seems like it would make things go smoother.