DVD + Athlon system

[SkullyOsis]

Alright, I got a 1ghz @ 1.7volts Athlon with an Abit KT133a, 384megs of Micron, GeForce2 GTS 32meg, Real Magic DVD Decoder with a Toshiba 6x DVD player. Using Windows Me

I've installed the USB Filter from VIA, along with 4 in 1 drivers 4.31
DMA is turns on, my HDs are on the RAIIDD controller, the DVD and Burner is on the built in DMA/100 channels.

Now the problem is, when I use the DVD Decoder + Toshiba DVD drive to watch DVDs, the system performance goes straight to hell. I notice my USB mouse movement stuttering, and other simple activities like writing this post as we speak (watching Clerks on DVD, "my girlfriend sucks 37 d-cks!", "in a row?&quotare slow to respond. Now c'mon, a DVD with DMA on + Realmagic isn't suppose to give a 1ghz any trouble. DVD playback is smooth of course.

Back on my Cel550+Abit BE6 2.0 (everything else stayed the same), I never had this problem, hell I can play CS rather smoothly without a stutter.

Open to suggestions besides formatting the computer.

 

[Zzzt]

Sounds like an IRQ problem. Do you need the ouputs on the decoder for anything in particular, or are you watching your DVD's on your monitor? If you do watch them on your monitor, get PowerDVD or WinDVD (They are software decoders that get a hardware boost from some video chipsets). and dump that decoder card. I'm saying that not because it's the card is bad - it's a great card - but if you don't need it, why waste an IRQ and a slot? That GHz machine won't skip a beat decoding.