Memory leak issue overall causing huge lag

Noticed a behavior happening in servers whatever they are : everytime we enter in one of their hub, the RAM taken increase between +10Mo and +80Mo depending how it's set up ; and it's never released. Leaving the server helps lowering the RAM taken ; but sometimes that's not enough, we have to close the game and reopen it to free the RAM.

But that's not all ; related to this or not, if there is too much people in a same place, this can cause big visual lag, making difficult for the player to open inventory, interact with NPCs and chests, pvp properly, chat and use commands ; because the game tries to catch up with what is needed to load. Even worse, this visual lag is carried on when going in other part of a server, because the game is still trying to load properly the datas, amplifying the phenomenon and making it worse and worse.