The built in serial port on the Amiga in Paula was probably the worst part of the Amiga's chipset. I remember having trouble with anything more than 9600 baud

The built in serial port on the Amiga in Paula was probably the worst part of the Amiga's chipset. I remember having trouble with anything more than 9600 baud on my A500, as 16 colour hires graphics mode basically starved the CPU from accessing memory during anything but the horizontal blanking period. Maybe it's more tolerable in the A3000. I do wonder if a copper based serial port driver would have been able to overcome this particular deficiency of the OCS...