memory – VirtualBox is leaking RAM and causing performance issues in host

VirtualBox 7.0.6-r2 gentoo is using too much RAM

My VM is set to use 16gb ram but the actual usage of ram is above 30GB, which is around twice the limit I set.

How can I fix it, if its a memory leak then I might switch to VMWare or Qemu + KVM (libvirt).

My kernel version is 6.1.19
Kernel Version

I tried rebooting VM, it did decrease the memory usage for some time. My host is yet not struggling with RAM because its having Zram and 64 GB but I like to use it for other purposes also :-).

I have not yet replaced the current virtual-box with 5.x because I don’t think I can compile the kernel module of it in this newer kernel.