[core] Improving sending queue sleepto accuracy. (#678)
[core] Improving sending queue sleepto accuracy. (#678)

Default sleep of 10 ms replaced with actual desired sleeping time.
Haivision/srt,Haivision/srt,ethouris/srt,ethouris/srt,ethouris/srt,Haivision/srt,Cinegy/srt,Cinegy/srt,Haivision/srt,Cinegy/srt,Cinegy/srt,ethouris/srt