But again you're blaming this all on "RAM management", there is no evidence to suggest this is an issue with RAM management, as apps being closed after idling is a sign of good RAM management, there's other reasons why your apps may be closing, but again, this term RAM management is way too broad. You may as well just say "cpu problem".
You need to specify legitimate, measurable symptoms, treated as individual variables, rather than chopping it all up to poor RAM management. Tell me how much RAM your using, what apps are running in the background, how long they've been running, how much RAM each one is consuming, what your idle RAM usage is...
If you tell someone the issue is poor RAM management, noone can help you. RAM management is part of the OS, it doesn't glitch out.