The process you use to create the project that you are going to burn, would be really helpful & what program do you burn with?
ImgBurn Version 2.3.2.0 started!
Image Size: 8,188,002,304 bytes
Destination Device: [3:0:0] TSSTcorp CDDVDW SH-S203B SB01-2 FB FR (E

(ATA)
Destination Media Type: DVD+R DL (Disc ID: RITEK-S04-66) (Speeds: 4x, 6x, 8x)
Memorex 8X, made in Taiwan
Write Speed: 8x
Operation Successfully Completed! - Duration: 00:14:50
Average Write Rate: 10,147 KB/s (7.3x) - Maximum Write Rate: 11,180 KB/s (8.1x)
Operation Successfully Completed! - Duration: 00:11:28
Average Verify Rate: 11,622 KB/s (8.4x) - Maximum Verify Rate: 16,849 KB/s (12.2x)
Scanned with SH-S203B SB01-2 FB FR @8X