Flash player h264 live streaming dropping frames

Hi
For some reason i noticed Flash player h264 live streaming is dropping frames very rigorously when streaming to fms 3.5. There are no frames dropped on client camera end. Dropped frames correspond to NetStreamInfo. The output is thus very jerky. This happenbs no matter what settings i use (176 x 144 @10fps). CPU usage is well below 50%.
I noticied that if i stream the same to Red5 1.0 i do not get any frames dropped. The output is perfect as expected. Can some one please help out on this.

Also i can confirm that the encoder used in FMLE and flash player 11.1 or above is not the same. The medium quality preset in FMLE uses "
Bandwidth           300kbps
Quality                Dont know
fps                      20
keyframeInterval 5sec
If i use the same settings in flash player 11.1 i get heavy framedrops and bad playback no matter what quality i use. So this confirms that both encoder are not the same as adobe claims.
On the other hand i sure would love to know why setting bandwidth to 0 creates a smooth stream without framedrops. I will request someone from adobe team to answer me here.

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Flash player h264 live streaming dropping frames

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