Weird problem with Teac CD-W552E

I hope someone can help shed some light on this. I recently acquired the above and have some problems.

  1. Using Alcohol/DJ to burn, at 50% of the burn process the recording speed drops dramatically until around 16x when it reaches the end of the disc.

  2. No such problem with Nero. I tried the same CDs for nero and the above.

Used CD quality check from cdspeed to check. Does not really produce a lot of errors 300+, but I am feeling paranoid. :a

Nobody knows?:confused: