I do run native on bare metal. I just tried a VM (LMDE) to see if it was a problem with my distro. It didn't have the memory hogging problem in v12, but since then has gotten worse and worse.I did notice it hard froze my Linux system once but I had the game client running non-stop for a couple of days. I did not notice if it has had any kind of memory leak though. My system though is native and not a VM.
Ubuntu Mate 20.04
Ryzen 1600 (12nm)
32 GB DDR4
RX 460
2 TB SATA SSD
4 TB HDD (got to store that porn somewhere)
8 TB HDD (got to store that porn somewhere)
Minis Forum TL-50
EndeavourOS KDE Plasma 5.24
Intel i5-1135G7 with TigerLake-LP GT2 [Iris Xe Graphics]
12 GB DDR4
1 TB NVME SSD (boot drive)
512 GB USB SSD (to store and play the games from)