FMLE streaming @ HD, video freezing but audio still works. ??

Hi all,
We are trying to some HD streaming using FMLE 3 and a Osprey 700HDe card.
We can get the HD input in @ 720p no worries.
Once the stream is pushed up to our CMD and embedded in the webisite we can view the video.
Thats all ok.
It plays fine for a while and then the video freezes but the audio continues to play. It clears up after a while but its a pretty constant problem every minute or so.
We tried some suggested methods like turning of hardware acceleration in the flash player.
And even pushed the buffer out to 1 minute.
No luck.
Its more noticeable at bitrates above 2000kbps.
We would also like to push the res and bit rate higher to deal with full 1080p.
But we would lik it to handle this lower quality first.
The processor is not running under too much stress. Around 35% and our internet is more than sufficient. 60mps down 5mps up.
Any ideas??

I think problem is in your network conditions. Please check the RTMP buffer at FMLE. Is it increasing. You can check this from Statistics Panel at Publishing tab.
This could be due to network latency at between your client and FMS side. Please check it using Ping command. If this latency is beyond certain level then also you can also see RTMP buffer increasing and Video stalling at subsciber side

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