Having terrible Hearthstone lagging? You’re not alone. Many players are reporting this. The good news is you can fix it easily!

6 fixes for Hearthstone lagging

  1. Check if your PC meets the minimum system requirements for Hearthstone
  2. Update your graphics driver
  3. Reset in-game settings
  4. Adjust Blizzard settings
  5. Delete the log.config file
  6. Modify your graphics card settings

Fix 1: Check if your PC meets the minimum system requirements for Hearthstone

This Hearthstone lagging issue may occur if your PC fails to meet the minimum system requirements for Hearthstone. Here we list out the both the minimum requirements and the recommended specifications (if you’re looking for a smoother and more enjoyable gaming experience) specifications for Hearthstone.
  MINIMUM REQUIREMENTS RECOMMENDED SPECIFICATIONS
OPERATING SYSTEM Windows® XP/Windows® Vista/Windows® 7/Windows® 8 (latest Service Pack) Windows® 7 / Windows® 8 / Windows® 10 64-bit (latest service pack)
PROCESSOR Intel® Pentium® D or AMD® Athlon™ 64 X2 Intel Core™ 2 Duo E6600 (2.4 GHz) or AMD Athlon 64 X2 5000+ (2.6 GHz) or better
GRAPHICS CARD NVIDIA® GeForce® 6800 (256 MB) or ATI™ Radeon™ X1600 Pro (256 MB) or better NVIDIA GeForce 8800 GT (512 MB) or ATI Radeon HD 4850 (512 MB) or better
MEMORY 4 GB RAM
If you’re not sure whether your PC meets the system requirements for Hearthstone, just follow the instructions below to check the basic specs of your PC:
  1. On your keyboard, press the Windows logo key  and R at the same time, then type dxdiag and press Enter.

  2. Under the System tab and you can check the Operating System and Memory on your PC.

  3. Click the Display tab and you can check what graphics card your PC is using.

You’d probably have to upgrade your hardware if any of the above-mentioned item fails to meet its minimum requirement.

Fix 2: Update your graphics driver

A corrupt or outdated graphics driver is one of the common reason of the Hearthstone lagging issue. So you should update your graphics driver to see if it fixes the issue.  If you don’t have the time, patience or skills to update the driver manually, you can do it automatically with Driver Easy. Driver Easy will automatically recognize your system and find the correct drivers for it. You don’t need to know exactly what system your computer is running, you don’t need to be troubled by the wrong driver you would be downloading, and you don’t need to worry about making a mistake when installing. Driver Easy handles it all. You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 steps (and you get full support and a 30-day money back guarantee):
  1. Download and install Driver Easy. 
  2. Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.

  3. Click the Update button next to the flagged graphics driver to automatically download the correct version of that driver, then you can manually install it. Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system. (This requires the Pro version which comes with full support and a 30-day money back guarantee. You’ll be prompted to upgrade when you click Update All.)

  4. Restart your computer, launch Hearthstone and see if the problem has been resolved. If the Hearthstone lagging issue still persists, move on to Fix 3, below.

Fix 3: Reset in-game settings

Some game settings are incompatible with your graphics card or monitor, which can be the cause of the Hearthstone lagging issue. So to reset your game settings in the Blizzard Battle.net desktop app:
  1. Completely exit Hearthstone.
  2. In Blizzard, click Options > Game Settings.

  3. Under the Hearthstone section, click Reset in-Game Options. Then click Reset to confirm the reset.

  4. Click Done once it’s finished.
  5. Relaunch Hearthstone and hopefully the Hearthstone lagging problem has been fixed by now. If it still lingers on, don’t worry. There’re 3 more fixes for you to try.

Fix 4: Adjust Blizzard settings

As it turns out, having Blizzard running in background when playing a game contributes to the lag issue. So you can adjust the setting so that Blizzard exits completely once a game starts to run.  Here’s how to do it:
  1. In Blizzard, click Options > Game Settings.
  2. Click General. Then under WHEN I LAUNCH A GAME, select Exit Battle.net completely from the drop-down menu and click Done.

  3. Run Hearthstone again and see if the lagging has been reduced.

Fix 5: Delete the log.config file

Deleting the log.config file is another proven method to reduce lag according to user feedback. Here’re the steps to delete the file:
  1. In Blizzard, click Hearthstone > Options > Show in Explorer.

  2. As soon as the Hearthstone folder pops up, completely exit Blizzard (and Hearthstone).
  3. Double-click on the Hearthstone folder and then delete the log.config file.
  4. Restart your computer, launch Hearthstone and see if the Hearthstone lagging problem has been fixed. If yes, then congrats! But if the problem still exists, you should try Fix 6, below.

Fix 6: Modify your graphics card settings

You can also modify your graphics card settings for reduced lag and smoother gameplay. To do so:
  1. Modify NVIDIA graphics card settings
  2. Modify AMD graphics card settings
  3. Modify Intel graphics card settings
Modify NVIDIA graphics card settings
  1. On your keyboard, press the Windows logo key and type control. Then click on NVIDIA Control Panel.

  2. In the left pane, click Manage 3D settings. Then in the right pane, click Global Settings and make sure you’ve modified the following features as follows:
    • Power management mode: Prefer maximum performance;
    • Texture filtering -Quality: High performance;
    • Threaded optimization: Off;
    • Vertical sync: Off.Finally, click Apply.

  3. Launch Hearthstone and check if the Hearthstone lagging issue has been solved.
Modify AMD graphics card settings
  1. On your keyboard, press the Windows logo key and type amd. Then click on AMD Settings.
  2. Click Gaming.

  3. Click Global Settings.

  4. Modify the settings as follows:

  5. Launch Hearthstone and check if the Hearthstone lagging issue has been solved.
Modify Intel graphics card settings
  1. On your keyboard, press the Windows logo key and type control. Then click on Control Panel.

  2. Type intel in the search box and click Intel® HD Graphics.

  3. Click 3D.

  4. Make sure you’ve modified the following features as follows:
    • Application Optimal Mode: Enable;
    • Custom Settings;
    • Anti-Aliasing: Use Application Settings;
    • Anisotropic Filtering: Application Settings;
    • Vertical Sync: Application Settings.Finally, click Apply.

  5. Launch Hearthstone and check if the Hearthstone lagging issue has been solved.
How have the methods above helped you with the troubleshooting? Do you have any ideas or tips to share with us? Drop a comment below and let us know your thoughts. 
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