The thing is devices onsite are used by 25+ different users a week each, they are currently all trying to use Sync and this is filling up hard drives and killing computers.
I get users complaining about having to download files in Edge from SharePoint to open then is specific programs. I am just looking at a solution that can help please my users.
On top of that, users are getting used to Cloud Speeds and when your dealing with huge files, I get a lot of complaints because the file either takes too long to open, or they have not waited long enough for the file to save and now its gone.
An op-prem cache of some form would be extremely beneficial, in the past I have tried a solution like this and yes its reliability was questionable at best.