Memory problem and slow-down

[Ashnurazg]

Hi,
I realized that Regnum uses about 1 GB of memory and slows down to about 25 FPS at Ubuntu Linux 10.04 LTS (also at Ubuntu Linux 9.10).

In consideration to windows (approximately 400 MB of memory , runs with opengl at 50 FPS) it is more than double of memory usage of Regnum at Ubuntu!

I use the same game.cfg at both Operating Systems.

My System:
AMD Sempron 2200+ (1,5Ghz)
1GB RAM DDR333
WinXP Prof x86 SP3 & Ubuntu Linux 10.04 x86
Nvidia Geforce 7900GS AGP 512MB (driver 195.36.24 at Ubuntu Linux 10.04 and driver 197.13 at WinXP)

Why regnum uses a huge amount of memory and slows down at Ubuntu Linux?

I hope that problem will be fixed as fast as possible.

PS: I suppose that Regnum doesn't use compressed textures at Ubuntu, but my grafics card and the Nvidia driver for Linux support it.

thx,
Ash