[PD] Gem- Text2d - Trouble

[matohawk]

Hello,

I made a test with Pd version 0.42-5 and GEM: ver: 0.92.1
GEM: compiled: Sep 22 2009

And the text2d object with antialias, I view a crasy performance 
difference between windows and Mac.
Same patch - same Pure Data - Same Gem

Patch :
http://www.th-th.fr/DOCS/Test-Gem/main-test.pd

MAC OS X - 10.5.6
2.8 GHz Quad Core Intel Xeon
=> CPU load in percent 25%
http://www.th-th.fr/DOCS/Test-Gem/MAC-Test-Texte-2d-antialias.png

Windows XP - Service pack 3
2 GHz Intel Pentium M
=> CPU load 4.6%
http://www.th-th.fr/DOCS/Test-Gem/PC-Test-texte-2d-antialias.png

Is that normal?

Cheers Thomas Thiery