[DennisSSebasiStephen]

I'm not an actual programmer, and I'm simplifying it even more than my simple understanding. This being the internet, someone will be along shortly to say "well technically."

There are all sorts of small chunks of data the get used once and then don't get deleted by the program or just get remade a couple minutes later. These build up literally bit by bit in your RAM until you start running out of space. When a program is shut down or restarted all that extra data is junked.

Best practice is to restart regularly to clear everything out. I run a restart every 24 hours, although I have seen servers running a higher player:hardware quality ratio to reset omegle every 12 or even 8 hours.