Reprojection error question

To complete the answer, a good approach is to start with a tolerance of 2. Then, if there are enough points, lower it to 1.5 or 1 to increase the precision. From experience, a tolerance of 0.75 gives an average margin of error of 0.20-0.25. but, of course, the number of points decreases dramatically. But starting with a tolerance of 2 avoids creating multiple components.