Request: Kick when reach AFK Time Limit?

Gripped into a server of lag, I would like to share my idea with the members of this server. As you all know, many people are regularly AFK and their worlds would be running, creating lag. If we could set up a reasonable time limit for them to be AFK, in which if they reached the limit they'd be ended up with a kick, then it would save many of us our precious time. People may think that they are being "punished" for the necessity of not being active while online, you are not and you could log back on within a couple minutes. Many other online games kick you due to inactivity to save room and lag. Could this be, in any way, accomplished or approved?

Maybe make the afk limit 30 minutes,It's a reasonable time and not to quick,If you're gonna be leaving for a long while just exit the web page/client

Except many people are too lazy to log out and come back, or do not know ahead of time what's going to happen. I think an hour of AFK is reasonable, with a kick message "Kicked: AFK Time Limit Reached". I hope there can be a solution to this idea, whether people getting kicked automatically or a total afk time by the side of their names.

Is that where the lag is coming from? The AFK people?

I don't know about these things, but I'm pretty sure it will reduce lag since it will unload worlds too, regardless of how much lag is being reduced.