Je pense que c'est a cause de ta CG trop vieille tout ca ... un peu tout le PC aussi
Voila ce que UbiSoft preconise pour jouer a Splinter Cell : Chao Theory
Windows 98/ME/200/XP (XP recommended)
o 2GHz Pentium III or AMD Athlon processor (2.4 GHz or faster recommended)
o 256 MB Ram (512 highly recommended)
o 64 MB video card (128 recommended), ATI 8500 or GeForce 3 or better DirectX 8.1 (DirectX 9.0 included on disc)
o DirectX 8.1 compliant sound card (EAX-compliant card recommended)
o 8X CD-ROM or faster
o 3GB Hard Drive Space
o Windows-compatible mouse and keyboard required (mouse with mouse wheel recommended)