Boot CD Problem, takes too much to load.

Hello. My problem is that the Boot CD takes too much to load. It works correctly, but the image that says DREAMCAST remains on my TV for about 1 or 2 minutes, while there are other Boot CD's that take about 30 seconds only. My CD-R is a Sony CD-RW CRX-140 , and I use Clone CD to burn the games. Games work perfectly, but my problem is only with Boot CD. I´ve tried to burn it at 1x, but the result is the same. I´ve read through the forum, but i found no answer. Could anybody help me, please? Write to [email protected] Thank you very much.