While in theory this option can also help to improve video and audio quality, as a larger playback buffer can help reduce the effects of network jitter and packet loss, it's not a miracle solution in this regard. Adding 200-ms of buffer delay using this feature is worth trying however, as some users have reported it has helped improve their connections.
While one might think adding 10-seconds of buffer would then only improve the connection further, at this point it doesn't really. Work is being done to change this however, such as the work related to the
&chunked transfer mode, which will work quite well with extended buffer times.