You'll probably find that burning the DVD at a slower speed may help in stopping the DVD hanging on your PS. The PS3 has a much stronger laser as it reads Blu-Ray and the PS isn't 100% designed to run user DVDs. It's all a bit trial & error to be honest.
update just seen your new post.
I would still try a slower speed as your PC has a (yet) stronger laser for burning to disks so it will read almost anything.