To open Task Manager press the keyboard shortcut Ctrl + Shift + Esc. Identifying which app or apps are hogging system resources is generally pretty easy using the default Windows tool “Task Manager”. How to identify which apps are hogging system resources You may occasionally notice some graphically intensive tasks running slowly when the GPU is under heavy load, but this generally doesn’t happen outside of the app that is actively hogging the GPU. It’s unlikely that you’ll see much performance impact, however, as computers are very smart at determining which apps need priority access to the GPU.

If your GPU is being hogged, then it will likely produce a lot of heat. The GPU or Graphics Processing Unit is responsible for handing graphics tasks such as rendering your desktop, apps, and video games. If your network connection is being hogged, then you’re likely to see other apps being slow at loading data from the internet. This means that you’re very unlikely to reach 100% even when your network connection is being hogged by a single app. For example, if a network card can transmit data at up to 1000Mb/s but you only have a download speed from your ISP of 100Mb/s then you will only ever reach 10% utilisation. The percentage measure is not a measure of your device’s network usage as compared to your internet download speed, instead, it’s a measure against how fast your network card can transmit data. Network usage is the utilisation of your network connection. If an app is hogging the use of a hard drive, then other apps trying to use that hard drive will be very slow as they can’t actively read or write data until the disk is free for new requests. The disk is the long-term storage or hard drive of your computer. This can cause those apps to become very slow to load or open back up if they were minimised, in some cases, it can also cause apps to crash. If one app takes up too much RAM, then some programs can end up having their data pushed out of RAM. Your computer’s memory is also known as the RAM, it’s used to store data that the operating system and active programs need to run. Additionally, the CPU can output a lot of heat, causing your cooling fans to speed up. If the CPU is being used heavily, other programs and the entire operating system can start to run slowly.

The CPU or Central Processing Unit is the core processor of the computer. Computers have five main resources: CPU, Memory, Disk, Network, and GPU.

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