Geforce2 MX can't handle 115+ FSB!?

[Riddarn]

I just got my brand new Geforce2 MX (Asus 7100T). I usually run my P3-450 at 558 (4.5x124 agp 2/3). It works great with my old Asus V3400 TNT1. With this new card I can't even run the fsb at 115 fsb. I get a lot of flickering textures in Quake3 that only appear when I change from 110 fsb to 115 and above. I mean i'm only "overclocking" the agp port by 10 mhz!? My old Matrox G200 handled 100mhz agp-bus like a charm. Could this really be true or am I missing something?
My setup:
Abit BE6 (newest bios)
P3-450 at various speeds
192 MB PC133
Asus 7100-T Geforce2 MX
Windows 2000 Pro (no service pack)
nVidia 6.18- and Asus 5.30-drivers

Please help!

Regards
/Riddarn