It cannot even play svcds in right aspect ratio, it also pretty slow.
In regards to speed, it's dependent on hardware and driver interactions (I have no speed problems running Mpeg 1 on following hardware;
1. Celeron 433Mhz, Intel 440ZX, NVidia TNT2, PC100 192MB RAM.
2. Athlon XP 3200+, nForce II 400 Ultra, NVidia Geforce 4 TI 4600 VIVO, PC3200 1GB RAM (also tested with 512Mb).
3. Athlon XP 1800+/2000+, VIAKT133A, NVidia Geforce 2 MX/400, PC133 640 MB RAM.
I haven’t tested Mpeg 1 on following HW recently (but I know they work fine with Mpeg 1/VCDs).
1. Intel Pentium 4, i850, 1 GB PC800 RDRAM (main development server).
2. Intel Celeron 300A, SIS BX Pro, SIS6236, 128Mb RAM (unused box).
Usually, Video cards (boxed retail) includes PowerDVD OEM e.g. as in Leadtek products.
However i like Windows Media Player 6.4, the gui is small and plays nearly every format correctly as long as you have the codec.
One could type "Mplayer2" on Start->Run mini-command-line (includes in XP)...