My name is*****'m a certified computer professional with 15 years of experience. It would be my pleasure to assist you with this. let's start with the simplest things first. Have you done a speed test to see exactly what your network speed is? If not, I recommend speedtest by Ookla. You can run it here:
http://www.speedtest.net. Please try that ans let me know the results.
That is likely to be a very large part of the problem. Voip applications like magic jack require a consistent steady bandwidth in order to work well. The magic jack site states that "Your Internet must have a minimum of 128 kb/s upload speed. If you're not sure how fast your Internet connection can upload data, test it out at speakeasy.net/speedtest. There's no requirement, however, for download speed." The results of your speedtest indicate that you only have half that. I know that this is not the answer thatyou were hoping for but it is the correct answer. If this has been helpful to you in any way, please kindly rate my service. If you feel that it hasn't been helpful, please don't rate and I will opt out and ask another expert to provide a second opinion. In any case, please have a wonderful evening!