Best buffer time for M3u IPTV

Hi Prog; I check the buffer time in the settings and it is by default on 200 , is this the best setting for iptv m3u or I can change to a lower or higher value for less buffering? because I compare Progdvb to VLC and on VLC there are a few steps and settings that I can adjust for optimizing for less buffering and in ProgDVB can you share some settings that can help on the buffering ; thanks