newbi, please, please help...

[zuker]

I am having a problem backing up my psx games. I have a yamaha cdr (6x4x16)with adaptec software and a 32x cdrom. For some reason when backing up my game, the buffer runs out and i get another coaster. It says that my source cannot keep up with the cd writer.
I have tried writing at all speeds with the same prob. It always seems to fail in the same spot on the blank disks. I have tried different games and different man. cd-r's.
It records audio cds just fine at any speed.
Can someone give me some suggestions on what to do?
Thanks