You are not the only one pitogiros... And I can ensure you, there is nothing wrong with your drive, it's just this TDK media.
I also had problems but I have been tad more lucky, I finally got these discs to "burn". Some of the worse burns I ever had. Nogo past 3.5GB mark no matter what drive or firmware I used.
Out of ten discs I only managed to burn one with acceptable result with write strategy swap.
My first and also last TDK-R 8x media ever. :a
After several emails to; email@example.com, I finally got in touch with one technicians with knowledge about DVD media...