pockets wrote:
This is just in my house, I have a 50mbps connection (supposedly) which is more like 35ish its going through one floor… the cable modem is going through a wireless router.
You’re lucky: I’ve a 20 mbps ADSL going at 8. 
Anyway, I suppose that the HDD is connected directly to the WD TV, which is connected via wireless to the router, so if everything was working before the only “issue” I may imagine is related to OS update, might be that some protocols or something has been upgraded and your iMAC doesn’t completely manage them due to “something” like age, or whatever.
My very personal advice is to search if someone else is experiencing this issues or verify which OS’ components are affected by the update, otherwise I think you unfortunately have to wait for a new update.
