What part of the computer causes lag to happen?

By this i mean parts like ram, cpu, ssd and other parts

12 Answers

  • 2 years ago

    Everybody has a long answer. Here is short "Nuclear" option.

    Start your computer. Wait ten minutes.

    Run "msconfig".

    Do a selected startup.

    Disable services you aren't familiar with.

    Disable startup progams you aren't familiar with.

    You might need a computer friend to do this for you.

    If all else fails, format hard drive, reinstall windows.

    This fixes all "extra" lag issues.

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  • Andy T
    Lv 7
    2 years ago

    Lag is a general laymen's term, so on that note CPU and GPU are most suspect.

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  • 2 years ago

    Lag can be caused by many things so there isn't a single part in the computer that is always to blame. And if you're playing an online game the problem may not even be your computer - or any of your equipment at all.

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  • Fulano
    Lv 7
    2 years ago

    The part with the biggest load that can't keep up with the rest.

    Lag is technically a delay in network communications, though people seem to use it for everything these days.

    What I do is just watch the GPU, RAM and CPU usage with Task Manager (If you've got Windows 10). Then you can see what part is maxing out, that's probably what's limiting the FPS. If none of them are maxing out, then the program probably isn't designed for multi-threaded and is being limited by slow CPU cores.

    Mainstream games are usually limited by the graphics card.

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  • Anonymous
    2 years ago

    A computer basically has 4 or 5 levels of Memory the data has to go through before it reaches the CPU.

    The Hard Drive is the slowest part in your PC. The amount of bandwidth a Hard Drive can actually move isn't much in comparison to the RAM. SSD's do wonders here and this is why they are so effective. There such a thing as a hard drive being too fast in certain situations. This is why you will barely notice a difference between a Traditional 2.5" SSD and an NVMe SSD when you boot the PC or load a simple program, despite the NVMe SSD being 6 times faster. The only people who truly benefit from Ultra fast storage are the ones saving and loading huge files like 4k videos. A Traditional SSD is 3 to 4 times faster than a Mechanical Hard Drive.

    Sometimes it isn't always the Hard Drive that causes the PC to run slow. It can be a bad internet connection, too many programs being open or Malware. If you have too many programs running or a program that consumes a lot of processing power, then you might Run out of RAM.

    What causes Lag is some part or connection being maxed out at 100%. If you have terrible Internet service then it's bandwidth would get maxed out. If you're connected to a slow website then that site would get maxed out. The CPU, RAM, or Hard Drive running at 100% can cause the system to Lag.

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  • 2 years ago

    any of them that don't keep up with the others ... this is called bottlenecking.

    temporary lag, however, is usually the fault of your ISP, not your computer

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  • 2 years ago

    What? Everything can cause "lag," which you need to define more. If we're talking "lag" in multiplayer fps type status, that's the network card. But everything hardware wise in a computer has to be 'fast' and functional in order for everything to go smoothly. Just one component struggling will bottleneck the rest. If I HAD to choose one....I'd probably say RAM. There is SUCH a noticeable difference when your RAM suddenly fills up.

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  • 2 years ago

    All can be responsible for 'lag'

    In games it will typically be the GPU, but depending on the system and the game it could be the CPU

    If things take ages to load then it is likely the HDD due to fragmentation.

    If it is slow in everything in general then it everything, but mostly the CPU

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  • Fred
    Lv 7
    2 years ago

    Sorry for the long answer but I prepared this answer a long time ago just for your type of question:

    What To Think Of When A Computer Is Running Slowly

    I assume that you are running an up-to-date anti-virus and have legitimate versions of software. If your computer used to be faster, you can get that speed back. These steps (most of which do not involve changing or adding hardware) may not solve all your problems but they are a first step in solving them and regaining your original speed.

    1. Make sure power plan is set to High Performance rather than Balanced. In Win 10, type “Power” on Task Bar and select Power and Sleep Settings, Additional power settings and then High Performance. (This may give you less battery time on a laptop.)

    2. Do you have enough hard drive space?

    Windows needs free space to function properly. Lack of adequate free space (even if you have no other problems) will slow a computer to a crawl. Remember that you do not gain space by deleting files until you empty the recycle bin.

    Press Win key-E, and click on This PC, you will see a thermometer gauge under the C drive. You can also right-click on the C drive and select Properties for more information. At least 10% (better 20%) of your hard drive should be unused. If lack of free space is a problem, you have a choice between eliminating unwanted programs or files or installing a larger hard drive. You can easily clone (not copy) your existing hard drive onto a new and larger HD using the free version of Clonezilla or Macrium Reflect Free. Swap drives and your PC will reboot just like it used to except you now have a larger HD.

    3. What is in the Start Up group?

    Many programs install themselves in the start up group enabling them to load faster at the expense of constantly using computer memory and CPU resources. CCleaner, Tools, Startup will tell you what is running and also gives you the chance to right-click on the program and select disable, which does not uninstall the program but it prevents it from loading every time you start the computer. You will still be able to run this program any time that you want. If you encounter a file that you are unfamiliar with, and you will, Google it to see what its function is and if it is safe to disable. Some programs like anti-virus belong here. Be careful!

    4. Do you have enough RAM? If you have at least 8 gig, this is probably not your problem.

    Right click on Computer or This PC on the Desktop and select Properties. Installing a SSD or adding memory are usually the easiest ways to speed up a computer. Go to www.crucial.com and have it scan your computer to see exactly what memory your PC uses and to see how much it would cost to upgrade. (If your video card does not have adequate on-board video RAM, Windows will use system RAM for this purpose which reduces the amount available for Windows and other applications.)

    5. Have you run the free versions of both Malwarebytes and CCleaner recently?

    These will clean out a lot of crap and malware on your computer and free up hard drive space. An added feature of CCleaner is a registry cleaner. Go to CCleaner/Registry and scan for issues. Fix selected issues (it is not necessary to back up the registry before doing this). Repeat 2-3 times until it finds no issues. Malware is far more common today than are viruses and many anti-virus programs do nothing to fight malware. Windows Defender has a full-time anti-malware component but I have found that rarely Defender will not find and remove a problem that Malwarebytes will. (The reverse is also true.)

    6. If IE or Firefox is very slow opening pages, go to Help and select “Start without add-ons” and see if this speeds things up. If it does, go to Tools, Manage Add-ons and disable all add-ons and enable them one at a time until you find which ones are slowing down the browser. Also, uninstall unused search engines and other toolbars. (You must do this for each browser that you use.) Don’t have more than a few tabs open at the same time. If you are having problems with browser add-ons, you can also go to CCleaner/Tools/Browser plugins to disable or enable these add-ons.


    If you are not seeing the Menu bar, right click on an empty area at the top of the browser screen and check Menu Bar.

    What Not To Do:

    Don’t use anything called an optimizer or registry editor except the one in CCleaner. Especially avoid any program that finds thousands of “errors” on your hard drive that you can only remove by buying their software. Manual defragging is not necessary on a modern hard drive- Win 7 and newer do this automatically. (I still defrag once or twice a year.) NEVER defrag a SSD.

    Worst Case Scenario:

    Only after trying all the steps listed above and if your system still has problems should you consider resetting Windows or restoring to factory condition. These are usually better choices than reinstalling Windows.

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  • 2 years ago

    Lag is a word that tends to get used in all kinds of situations, not all of them necessarily correct.

    Typically lag refers to latency, which refers to networking and the time it takes for you to send a packet of information and for the receiver to respond. The most common situation this comes up is during games, where having a lot of lag can result in unresponsive gameplay

    In that sense, lag has very little to do with your actual PC and more to do with your internet connection and the connection of whoever you re connecting to on the other end.

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