Nobody can tell you anything without proper system info or other technical details like actual video info, render settings and so on.
My system properties are as follows.
Processor - Intel Dual Core
Ram - 4GB
O/S - MS Windows 7 Professional 32bit
Video render settings,
Format - H.264
Frame Rate - 25
Profile - High
Level. - 4.0
Output. - 1280X720
Target Bitrate - 10
Maximum bitrate - 10
Use Premiere or the Adobe Media Encoder to make your final deliverable. AE is not good at H.264 encoding.
Render an intermediate file out of AE and use that in Premiere or AME.
ok, then I'll try the Adobe Media Encoder and see.
Thank you for kind help!!