Buffer under run error on ATAPI 6206A CD

I’m getting a “buffer under run” error on my ATAPI 6206A CD ReWriter. I have Firmware version 1.2A and driver date 8/24/1996.
I’ve used this CDRW on two different computers and the result is the same. It works fairly well at first. Then after I load a few programs the filure rate of CD’s beeing copied goes up greatly.