I have been meaning to tell you, All 5.9 Gb RAM that i dedicate to my AE is used after 20 minutes of simple processing. I just do some very simple motion graphic design with 3 simple layers without any imported objects. the very first moment of running AE, it gets only about 300 Mb of my ram, but after a couple of minutes it goes to more than 90% of using RAM; so my Laptop's fan speeds up and sound like an overheating.
Important Note: I just have to Purge the "Memory and Disk" so as to reduce the RAM usage of AE in every 20 Minutes, and again the Ram usage will be high.
Note 1: I check the processes that possess the Ram significantly: I only have AE running.
Note 2: I give the AE 11 Gb disk cache on SSD drive.
I don't reckon the 90 % usage of Ram just for a very simple processing is fine. what is the best way to get rid of that problem?
There's nothing wrong. You just don't understand how AE works and in regard to this, continually previewing 20 minutes of video and thus AE filling the RAM is nothing out of the ordinary. It might be a good idea to read up on what AE actualyl is meant for. It's not an editing program or titling tool like you semm to expect it to be.