3. At the bottom left of the program tick the "Advanced" option.
4. Change the Compression Settings. Try lowering the codec quality down a few selections, as well as increasing the audio per packet setting up a few selections. (Recommend setting is 40kb/s, make sure the setting is matched in your servers murmur.ini)
5. Increase the "Jitter Buffer". Try increasing the Jitter Buffer up a few selections and see if this helps any.