Hello,
RAM USAGE:
We are using mbedTLS 2.16 for TLS communication and found that it is consuming more RAM compared to other Cybersecurity library (Mocana ) which we were using earlier. I want to reduce the RAM usage, if there are any settings which i can apply to reduce the RAM usage
Presently MbedTLS is using almost 38KB of RAM per TLS connection, I have small memory in my device (STM32F437), I want to reduce this RAM consumption to 30KB per TLS connection.

SLOWNESS:
we have found that after 4 TLS connections on STM32F437 controller, communication becomes very slow, we measured the CPU utilization at this point of time, and  it's only 40% ustilized, we are not getting any clue why it becomes so slow. When we compare with Mocana cyber security library we were able to run 6 TLS connections with good speed. 

Please help us with the above 2 topics. 
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Thanks and Regards,
Sunil Jain