DVD writer at 1/3 rd of normal speel (Plextor PX-750A)

[qanda]This thread is about the Plextor PX-750A. Click here to see full specs[/qanda]Got a new Plextor a few months back and after only one month he started reading/writing DVDR’s at about 1/3rd of it’s original speed.
Can anyone help ?
Herman country.herman@skynet.be :sad:

The drive might have ‘dropped’ to running in the slower PIO mode, rather than the faster DMA mode.

Have a look at the FAQ:
http://club.cdfreaks.com/f43/plextor-faq-read-first-49767/#general-dma
and this thread:
http://club.cdfreaks.com/f61/troubleshooting-enabling-checking-dma-windows-vista-xp-2000-me-9x-101616/