Slow after el capitan update
Hi,
I have a Macbook Pro 15 inch 2015 Model, everything was fine until El Capitan update, copy and past is slow, photoshop is laggy, every time i restart iTunes your iCloud section expired ,also when restarting This Mac can't connect to iCloud because of a problem with [email], the fan running more often.
Please help.
thanks in advance.
MacBook Pro, OS X El Capitan (10.11)