ok here is my problem:
PRI IDE -> Master=HDD, Slave=empty
SEC IDE -> Master=BENQ 1640, Slave=CDROM
SATA -> CH0=HDD
MEDIUM: Memorex DvD-R 8x @ 8x (CMC MAG. AE1)
Solid Burn / overspeed off
really bad burning speed, 8x was like 3-4x, a normal dvd took me about 15-20 mins! many burning errors.
PI Error=100-150 directly at start then it went to 200-400
then i switched BENQ to PRI IDE Slave, unplugged CDROM and left SEC IDE empty.
Result-> Good burning speed 8x was 8x! and 25-50% less errors like before...at start...
Drive: BENQ DVD DD DW1640
Disc: DVD-R (CMC MAG. AE1)
Selected speed: 8 X
PO failures: 0
Maximum: 10.5 %
Average: 8.68 %
Elapsed time: 8:12
Number of samples: 14088
Average scanning interval: 8.04 ECC
Glitches removed: 0
Now im not sure what could make so many errors, there was 1-2 HDD access where buffer dropped to ~30% too.
The last test started with 50 and increased to 186
Maybe its the Memorex DVD-R? Any suggestions which medium should work fine or anyone else had such problems?