VM or decicated server for Jitsi

I have managed to install Jitsi in a VM:

  • 8 GB de RAM
  • 90gb HD.
  • 4vCPUs
  • Ubuntu 20.04

I then improved its performance following the advice given here:

However, I was wondering if can get a better performance for Jitsi if I use a dedicated server with increased specs.
I would like to hold large meetings, as large as Jitsi allows. What specs would be the best possible specs for Jitsi? Would a dedicated server work better?
I would very happu abour any comments or ideas.
Thank you and best,
Jose