Q: safari slow to load page after sleep

The warranty entitles you to complimentary phone support for the first 90 days of ownership.

If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

I have this same problem and it's insanely frustrating.  When I wake up my MacBook the network is clearly up since I can ping places just fine and dig resolves DNS just fine, but Safari acts like there's no connection.  It just sits and spins when I try to load a site, and eventually times out.

My machine is a MacBook Pro Retina 13" early 2015, running 10.11.3

Safari - Unsupported third-party add-ons may cause Safari to unexpectedly quit or have performance issues

Safari doesn't load a page or webpage items are missing

Safari/other browsers – Website not loading