Also earlier today, Apple released the latest version of OS X. Andrew Cunningham details a welcome change:

The first change in OS X 10.10.4 is to “networking reliability,” which is likely a reference to the replacement of discoveryd, a new-but-flaky DNS service introduced in Yosemite. It has been replaced with what appears to be mDNSresponder, the service that handled discoveryd’s tasks in previous versions of OS X.

According to Apple, iCloud Photo Library in the Photos app should be more responsive now, too.