I have a problem with my GSA 4165B

hi there
well, my problem is: i cant burn dvds at 1x speed! im trying to burn ps2 dvds, thats why i want the best quality recording… i can burn at 4x and 8x speeds only and when i try to play it on my ps2, the game keeps skipping all the time… can anybody help me? thanks in advance!
oh, i dunno if someone has already posted something similar to this before… i looked for it in the forums, but i didnt find it… im new in here ^^ well, thx guys

oh yea… i forgot to say that im using RIDATA dvd-rs… do they determine the min and max speed?? (as you may notice, im new in this cd/dvd stuff… ^^;)