Hello. I have recently got into after effects, and haven't had this problem until i deleted and then re downloaded AE (I was having a problem with creative cloud) So, I usually I want to render a 10 second clip, which isn't much, but when I try and render it with RAM Preview, it only renders about one second. I looked at other forum posts, and they suggested to upgrade your ram, but I have 12GB's of RAM dedicated to after effects, and my computer ONLY has 12, so I'm really stuck here. if someone could help me, that would be great as I really can't do anything in AE without a full RAM preview. Thank you.
12 GB RAM isn't much for After Effects. You also need to allow for some RAM usage by the system for it to work properly.