We're in the process of upgrading to windows 10 and noticed that when saving files to an HNAS share its extremely slow. 1 minute even for one character change in the file. We have trend server protect for storage enabled and through much trial and error we've discovered that if we disabled AV on the share saving is instant. This is not an issue with windows 7. Now I realize the the issue points directly to AV and we've opened a ticket with them with no solution. We've found ourselves in the middle of a vendor blame game. Has anyone else experienced this?