Qemu shared folder

Recently I moved to UBUNTU 19.04 after having crash in my Windows 10.
The crash happened not because of hardware because of a windows update.
I installed Windows 10 on virtual machine using gnome boxes. I also installed SPICE guest tools and the tools for file sharing. The machine is working really nice; however, when I copy files from the shared folder is slow. Can you help?

Damn. That sux. Good luck. Wish I could be of some help. You know if the world was flat, cats would push everything off.