smb samba share shared folders

My situation is I have a client that 90% uses macs in their office. They map a drive/connect to server to access their data share. The issue that I'm seeing that accessing a SMB share with a mac is slower from the googling I've done and also the pc user never has any slowness issues. Will...

When sharing folders between the mac host and the windows vm, parallels uses SMBv1 from the early 90s. SMB version 1 send lots of extra messages and is less secure and efficient than modern versions, the current being 3.1.1. Is there a way to force Parallels to do sharing over a more recent...