Rename Attach folder to attach.old as work around for performance issue opening lots of files from TXN folder

I was told by support a few hours ago that a temp work around for the performance problem is to rename the attach folder to attach.old?

The performance problem is after an update last Friday, some user logins are causing hundreds of files to open from the attach\company name folder\txn

It seems to me that renaming that folder would break QB's function? They said it wouldn't but I don't believe them.
Anyone else try this crazy temp fix?