Dvd-108 suddenly burning at 1.6X

I Currently have a Pioneer DVR-108, i have had troubles with it when first installed but got past them with help from this site. Been working fine for around about 2 months now and suddenly drive is only burning at a max of 1.7X. I Have not changed my media nor any of my software used. This has me stuck plz help
Thanks

Sounds like something has happened to your system and DMA is no longer enabled…

Usually if in Pio mode the speed should be somewhere around 2.4x. 1.7 seems even slower. Change the IDE channel and see if that help.

How exactly do i enable DMA?