VMs Frozen and ssh broken pipe randomly

Hi everyone,

I have an issue with VMs console randomly freezing (VNC) and ssh randomly broken pipe.
For VNC, I must refresh the page to re-connect, and for ssh I need to constantly reconnecting with `ssh` command. It was quite annoying...
Only VM frozen randomly, LXC working perfectly fine.

Hardware:
CPU: AMD Ryzen 7 2700
32 GB DDR4 RAM
M.2 SSD

I have spend days on solving this issue, if you have any ideas of this will be highly appreciated. Thanks.