5 Reasons Not to Install OS X El Capitan and 7 Reasons You Should

Install If You Still Have OS X Yosemite Problems

Apple adds new features to big updates like this, but it is also a way to deliver a lot of fixes for OS X Yosemite problems. We already called out the WiFi fix specifically, but there are likely many other bug fixes and upgrades in OS X 10.11. Apple specifically mentions better performance as well.

We typically see a number of small issues and bugs fixed in a big update like this, even when the items are not listed on a preview page that touts the new features.

If you're still dealing with nagging problems in OS X Yosemite this could deliver the fixes you need. You may be able to fix a lingering problem without going to an Apple Store for help.