Optimal router settings? wireless?

The settings you posted have different optimal values for their location/environmental conditions/or other radio interference. The only setting you should worry about is Fragmentation Threshold. You can decrease the value of Fragmentation Threshold to improve performance, but caution, too low of a setting can actually decrease performance. You can slowly work your way down, while checking to see if you have gained any performance. Fragmentation Threshold's default value is usually 2046.