I tried using Astroburn 1.0.91 with my new 22x DVD burner. It's a LG GH22NP20. I tried burning a Verbatim DVD+R, ImgBurn burns it at full speed, that is 22x.

There are two problems:
  1. Astroburn only allows to burn with 16x speed not 22x.
  2. Burning takes more than 12 min. The LED of the burner blinks for a short time then stops blinking for a short time, then starts blinking again and so on until the end. Astroburn shows that the buffer is full the whole time.