If you’re Mac is running slow There are a variety of ways to fix the problem. First, you can start the Activity Monitor to look for memory usage issues. Select the processes you’re experiencing and then press Quit. You can click Quit if the program is taking up too much memory. You can use the System Memory tab as well to see if any slow processes are running within your Mac.
A CPU issue is another cause of slow performance for your Mac. You should close any program that uses overly much CPU. Start Activity Monitor, click on the «X» button beneath the icons. If you’re not sure which apps are taking up the most CPU then try a Google search to find them. It should provide you with an idea of which applications are causing your Mac to be slow.
If your hard drive is full this can cause the Mac to be slow to operate. Many applications use up excessive memory, making your system’s performance slow. You can delete files they mac mojave slow don’t need or transfer them to another drive. Start Activity Monitor to see a listing of all running processes on your Mac. It’s likely that you’ll see some mistakes – this could be a good sign you’re using more than one application in parallel.