Pioneer Burner taking the same amount of time at 2X and 4X

I'm using a Lite-on LDW-411S (4x burner) with firmware FS02. I won an auction from ebay for 100 ritek ridata disks and I started burning with them at 4x. I noticed that i got alot of errors/incompletes/coatsters and i decided to switch to 2x. I expected that the burning process would take longer by downgrading the speed, but it stayed the same (burns an entire disk in about 30 minutes). I noticed that when i burned at 4x, the light on my burner kept blinking from red to orange and while i burned at 2x it continually stayed on red. I dont know whats wrong. By switching to 2x i've had about a 90% success rate at burning (which i still consider kind of low), considerably higher than the 50% rate i was getting by burning at 4x.

I downloaded DVDIdentifier to make sure i got 4x disks and i got this:
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Unique Disc Identifier : [DVD-R:RITEKG04]
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Disc Type : [DVD-R]
Manufacturer ID : [RITEKG04]
Manufacturer Name : [Ritek Co.]
Disc Application Code : [Unrestricted Use : Consumer Purpose]
Recording Speeds : [1x , 2x , 4x] (8x Cannot Be Detected)
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
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[DVD Identifier - http://DVD.Identifier.CDfreaks.com]
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I'm not really sure whats going on. Can someone help me out and tell me if theres something wrong with my burner, disks, and or firmware. Thanks For looking. I hope someone can help.

 

i ran DVDIdentifier again to make sure my burner is really what its suppose to be and here are the results:

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Unique Disc Identifier : [DVD-R:RITEKG04]
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Disc Type : [DVD-R]
Manufacturer ID : [RITEKG04]
Manufacturer Name : [Ritek Co.]
Disc Application Code : [Unrestricted Use : Consumer Purpose]
Recording Speeds : [1x , 2x , 4x] (8x Cannot Be Detected)
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
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** INFO : An Empty Writable Disc Is Recommended For Accurate Results
** INFO : Drive = LITE-ON DVDRW LDW-411S [FW FS02]
** INFO : Write Capabilities = DVD+R DVD+RW DVD-R DVD-RW
** INFO : Disc = [DVD-R:RITEKG04]
** INFO : Write Speeds (Supported By This Drive On This Disc) Listed Below

** INFO : GET PERFORMANCE Write Speed Descriptor(s)
Descriptor #1 = 5540 KBPS ( 4.00x) - [CLV/Non-Pure CAV]
Descriptor #2 = 2770 KBPS ( 2.00x) - [CLV/Non-Pure CAV]

** INFO : MODE SENSE Write Speed Descriptor(s) [Legacy Command]
Descriptor #1 = 0 KBPS ( 0.00x) - [CLV/Non-Pure CAV] - [Invalid Entry]
Descriptor #2 = 0 KBPS ( 0.00x) - [CLV/Non-Pure CAV] - [Invalid Entry]
** WARNING : Drive May Have Returned Incorrect Descriptors
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[DVD Identifier - http://DVD.Identifier.CDfreaks.com]
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