your create disc looks really good, the buffer stayed high [really high 98%] and your cpu usage doesnt look concerning to me.
other than i would not recommend using moser baer dvd’s the disc quality looks good.
i would try a few more burns, do one at 12x and one at 8x. do a disc quality on each of them. i would go with the burn speed which has the lowest max and total PIF counts but doesnt send the PIE to really high numbers.