Penn0116 - Did you ever get your problem fixed? I am basically having the same issue.
I have a Gateway GR-500 with a Double layer 8X DVD+/-RW drive that should according to Gateway
DVD-R: 2x, 4x CLV, 8x ZCLV
DVD-RW: 1x, 2x, 4x CLV
DVD-RAM: 2x, 3x ZCLV, 3x-5x PCAV (Ver.2.1)
DVD+R: SL - 2.4x, 4x CLV, 8x, 12x ZCLV
DL - 2.4x CLV
DVD+RW: 2.4x, 4x CLV
CD-R: 4x, 8x, 16x CLV, 24x, 32x, 40x ZCLV
CD-RW: 4x, 8x, 10x, 16x CLV, 24x ZCLV
Originally I was able to burn at 8x. That was about 500 DVD's ago.
Now I burn at 4x as a max speed.
This problem has been plaquing me for several months.
I am using Nero SmartStart for burning.
At first I thought it was the media but after many different brands I do not think that is the issue.
I even got so frustrated that I did a destructive reformat.
And still the problem exists.
A call into Gateway tells me that it is actually an
NEC ND-2510A, even though my device manager tells me it is something else.
I tried a firmware update from NEC and I received the message "Target NEC ND-2510 is not found correctly"
I am about this close to buying a new burner.
I'm still curious why I am limited to 4x burns.