This should help a lot to speed up your Mac’s long startup time.

This will remove the application from the list and it will no longer be loaded on startup. Now, select Login Items, click the name of an application you don’t need to launch during startup, then click the “-” symbol located below the list to the left.

Go to your System Preferences > Users & Groups, then click your username. Speed up your Mac’s startup time by removing unnecessary startup apps. When you don’t manage your Startup Items, it’s like making your Mac run a sprint with a gigantic, book-filled backpack - it’s going to take a bit longer for it to get moving, right? Lighten the load on your Mac. Give your Mac a clean start and make OS X run faster. How to fix it: Manage your Startup Items. Not only do they slow down your Mac on startup, but they continue to use up resources the whole time you’re using your Mac. When you start your Mac, a lot of things get loaded in the background. You’ll probably see a nice performance boost. So, head over to the Mac App Store download and install the latest version. Don’t think of it as adding more junk to your already-slow Mac - think of it as new software that makes your Mac run more smoothly. Having the latest version of OS X is a good practice (the latest version right now is macOS High Sierra 10.13). An older OS X typically runs slower - that’s why Apple releases new OS X’s every year or so. Your Mac’s OS X is extremely important to how well it performs. Cleaner frees up your disk space by removing all the unnecessary and unwanted files in just one click. When the free space on your drive gets really low, your Mac stops operating efficiently and becomes very slow. Uninstalling apps and deleting useless files from your Mac is easy, but the residual junk or cache files left behind often fill up your disk space and clutter the system. It offers all-in-one Mac cleaning features including a disk cleaner for junk files, big files and duplicate files. The best option is to use a Mac cleaner, like Dr. However, the hard part is cleaning up your system and figuring out all the stuff that can be safely removed for more space. Cleaning up old movie files, organizing your Desktop, and searching your Mac for old files you don’t need is the easy part. Unfortunately, doing this manually isn’t as easy as it sounds. If you can increase available disc space on your Mac, you’re sure to see an increase in your Mac’s speed. Nothing slows down a Mac more than having too much on your hard drive. If you find that your Mac is starting to lag in performance, freeze up, or just acting strangely, it’s probably time to optimize it with an efficient Mac cleaning tool. There are several other reasons why your Mac might be running slower:

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