Windows has a set of priorities for some applications, whereby the system will provide memory and handle pre-prioritized applications with more resources, and non-priority applications will be limited. You can also change the priority of each running application in the Processes tab.
By right-clicking on the application, and selecting Set Priority, then select the priority you want. There are 6 priority options for you to choose from, high priority setting will help the application run better, besides setting low priority for many unnecessary applications. It will limit hanging and machine lag.
Usually you may encounter some problems when the application is incompatible, and you will have to change the Compatibility setting in Properties, when right-clicking the application's icon. However, you can quickly change the Compatibility of the application in Windows Task Manager. By right-clicking on the application and selecting Properties. You can also from the Applications tab, right-click on the running application and select Go To Process, to quickly switch to that application in the Processes tab.
Have you ever wondered what "svchost.exe" really is? There are quite a lot of different Svchost.exe, and they are really functional files to run the Services functions that help Windows work. Each Svchost.exe takes care of running different Services functions. If you want to see which svchost.exe is actually running, you can right-click it and select Go To Services. It will take you to the Services tab, and you can see the Services running under Svchost.exe and the function it takes in the Description column. You can choose to turn off Services that feel unnecessary.
Task Manager includes a CPU Usage icon in the system tray, making it easy to see how the CPU works. However by default this icon will be hidden, so you click on the arrow in the system tray, drag and drop the CPU Usage icon into the Notification frame. And you can easily monitor CPU status continuously on the system tray.