mata and data chunk size

network speed	meta	data	buffer enoughTime	first frame	extra
3g	0.5 0.1	0.7 0.3	2	ㅤ	ㅤ
1M	ㅤ	ㅤ	2	ㅤ	ㅤ
2M	ㅤ	ㅤ	2	ㅤ	ㅤ
3M	ㅤ	ㅤ	2	ㅤ	ㅤ
4M	ㅤ	ㅤ	2	ㅤ	ㅤ
unlimit	ㅤ	ㅤ	2	ㅤ	ㅤ