2x burns works on one pc not the other

[EVOEvo]

ok im getting to think its not my burner that makes it were i cant get a working copy ps2 game on dvd-r at 2x but my pc i got 2 tobashi burners sd5004 i think and i got one in a 1.4 gig system with 512 mb ram and the other in a 1.2 gig system with 256 mb ram and i burned ffx on the 1.2 gig system at 2x and it plays fine i got a few other games i burned at 2x i will test them out and see how it gose may just be my system also last 2 games i burned on the 1.4 gig useing record now i been getting these stupid erros like px something something error i dont know whats going on but lukly the game still worked but i may have to start useing primo this happen b4 useing primo so i went to recordnow seems to switch back and forth but it will burn my dvd moives just fine and also at 2x and plays great