From the limited information you have provided it is assumed that your â€œskip and freezeâ€ problem is caused by to use of cheap blank DVD Media (99.9% of the time â€œskip and freezeâ€ is caused by cheap blank DVD Media).
Suggest using known proven high quality Taiyo Yuden Media. A reliable source of Taiyo Yuden Media is Rima.Com (http://rima.com). Locally FujiFilm or Sony is good reliable Media if the package clearly states Made In Japan and avoid (do not purchase) FujiFilm or Sony Media manufacture in any other country other than Made In Japan because the quality is unknown and consider suspect.
Also suggest viewing the below PC World article concerning DVD Burner Firmware.
Suggest visiting SlySoft (http://www.slysoft.com) and download the latest versions of AnyDVD-CloneDVD.
Suggest viewing the AnyDVD-CloneDVD User Tutorial, which provides detailed information on the use of the AnyDVD-CloneDVD software programs.