In Pentium IV (ACER 1603LM 2.6)
In magorit YAMAHA TG SY and MU (see my config with dominique027)
There was never any problem and the interface is inssaturable, even in extreme limits.
addition of 128 MIDI channels (my config)
I use it for 2 years. XP with no problem, it is part of the family, I would say. This is my first bcane in this genre and I do not think chang currently.