Very slow cutting of involute teeth

Hi all,
I'm cutting a simple 22 tooth spur gear (Module = 5, p angle = 20) using a 4mm flat head milling bit. The GCode for this has been generated from the "Gearotic" application. This is in 12mm MDF using 1mm deep passes each time. The hole in the middle and the spokes cut out as fast as can be expected. However, cutting the teeth themselve s is very slow. EMC2 says the gcode should take about 20 minutes to mill. The reality is that it took about 2 hours. It's the cutting of the teeth that is painfully slow - slow enough to burn the wood.

It's milling this kind of output that is slow:

G02 X38.4770 Y10.0276 I38.0098 J8.0829
G01 X38.8059 Y9.9486
G02 X38.8451 Y9.9387 I38.3387 J8.0039
G01 X39.1862 Y9.8494
G02 X39.2252 Y9.8388 I38.6798 J7.9146
G01 X39.5784 Y9.7387
G02 X39.6106 Y9.7293 I39.0330 J7.8145
G01 X39.8526 Y9.6563

Is there a reason this is so slow, and is there anyway to speed this up? Is this a gcode output issue or is it an EMC issue?

Thanks,
Allistar.

Setting "G64 P.2" first Makes a huge difference. I'll see if this makes any difference to the meshing of the gears once they have been made. Thanks for the tip.