If you are facing playback issues, stuttering, buffering etc. Perfect Player enables you to select the type of decoder and change the buffer size. Under the playback settings, you can choose from different types of decoders.
Auto is the best default decoder, HW+ is the second best, then Hardware, and if you have a slow connection, you can try SW. Buffer settings are pretty simple, you can choose 1 through 4, 1 being the smallest, and 4 the largest buffer size.