yesterday I bought a LG HL-DT-ST DVDRW GSA-2164D usb writer, and I figured out burning sf DVD clones like toca3, xren, rainbow six, doesn't matter what, I can burn them all on rw and play them on any internal or external DVD drive, reader or writer, it doesn't matter.
ATIP funcion doesn't work also. So burning and playing doens't give any problem. I knew the method of patching cd's but how is this possible. I thought hardware could not handle DVD copies of SF at the moment, so I have to say this is not true. I tried all kind of media and it didn't matter which one I used, all of them worked