So basically I have an idea of firing a remote every 15 seconds to the server from the anti exploit local script to make sure it wasn't deleted, I have a table, and I add every person who did fire the remote in it, and those who did not will not be in the check table and thus removed from the game, my concern in, could it make the game laggy? could it kick laggy players?
It would be pointless.
Why would a exploiter stop firing a remote for no reason? It doesn't make sense.
What you could do instead is to hide your remotes using confusing names, create useless emotes and etc.
And, anyway, this wouldn't make the game laggy as it just fires a remote per client per 15 seconds. This would be useful instead to make a thing called "ping", which basically means checking if a player is online or not, and could be useful too to check a player's latency.