Mouse camera sensitivity super high in all the games I play. Windows 11

Interesting. At this point, testing from a Linux USB stick will confirm if this is hardware or Windows-related. You could also contact Dell Support to help isolate possible hardware faults.

You can find helpful steps here.

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

If you have more than one monitor, disconnect all but one to rule out multi-monitor DPI scaling issues.

You can also try disabling mouse acceleration fully in the registry. Backup your registry first (File > Export in regedit) because incorrect changes can cause system issues.

Press Win+R, type regedit, and press Enter

Go to HKEY_CURRENT_USER\Control Panel\Mouse

Set MouseSpeed to 0, MouseThreshold1 to 0, and MouseThreshold2 to 0

Restart your PC

Thanks for your effort on this.

Since you’ve already done both a clean install and a repair install using the ISO, that strongly suggests Windows itself isn’t the cause. If the issue still happens in every game but not on the desktop, it’s likely tied to a driver, firmware, or hardware setting.

At this point, you can focus on isolating anything that could be affecting mouse input differently than normal.

Step 1. Try to completely uninstall Razer Synapse and all Razer-related drivers, including any hidden devices in Device Manager under Human Interface Devices and Mice, as well as other pointing devices. Reboot and test with a basic non-Razer mouse before reinstalling anything.

Step 2. I recommend checking that your motherboard's chipset drivers and BIOS are fully up to date on Dell’s support page. Outdated firmware can cause USB polling or input handling issues that affect all mice, even across different brands.

Step 3. If possible, boot from a Windows PE or Linux live USB and run a mouse test in a browser-based FPS tester. If the same behavior occurs, it’s hardware or firmware related, not Windows.

Step 4. Roll back GPU drivers to a known stable build from before the issue, and block Windows Update from auto-updating GPU drivers temporarily.

Step 5. Check BIOS/UEFI settings for USB polling, legacy USB mode, or any custom gaming mode.

If needed, you may also consider contacting Dell directly to review the BIOS configuration or help isolate any hardware-related issues.

All the best!

Gotcha! Thanks for the update, Brent. Since you’ve already tried driver changes, clean boot, overlays off, and even a full reset, an in-place upgrade can repair damaged Windows core components and input subsystems without wiping your apps or files.

Here’s how to do it:

Go to the official Microsoft page: https://www.microsoft.com/software-download/windows11

Under Download Windows 11 Disk Image (ISO), select Windows 11 (multi-edition ISO) and click Download.

After downloading, right-click the ISO file and choose Mount.

Open the new virtual drive and run setup.exe.

When prompted, select Keep personal files and apps.

Follow the on-screen steps.

The process can take up to 1 hour and may include multiple restarts. When it finishes, Windows will be refreshed while keeping all your data intact.

If the issue comes from a corrupted input API in Windows 11 24H2, this should fix it. If it persists, we’ll know it’s either a low-level third-party driver or something in the 24H2 build itself.

Let me know how it goes.

Thanks for bringing this up. I understand how frustrating that can be. Let’s work on resolving this together.

Before we proceed, I need to clarify a few things:

1. Are you running Windows 11 24H2 or an earlier build?
2. Did this begin right after a Windows update, a graphics driver change, or a Razer Synapse update?
3. Does it happen in every single game you own, or just certain ones?
4. Do you have any overlays or background software (Discord, Xbox Game Bar, AMD Adrenalin, MSI Afterburner, Razer Cortex) running when playing?
5. Have you tried testing under a clean boot or a new Windows user account?

If the issue is only in games and not on the Windows desktop, it usually means the raw mouse input being fed to the game is being altered by something in the background, often overlays, GPU software, or a Windows setting.

In the meantime, here are the steps that you can try.

1. Turn off all overlays
   • Steam: Steam > Settings > In-Game > uncheck Enable the Steam Overlay while in-game.
   • Discord: User Settings > Game Overlay > turn off Enable in-game overlay.
   • Xbox Game Bar: Windows + G > Settings > uncheck Open Game Bar using this button on a controller.
   • AMD Radeon: Right-click desktop > AMD Software: Adrenalin > Settings > Preferences > turn off In-Game Overlay.
2. Reset game configs
   • Locate the config file for one affected game and rename or delete it. The game will recreate it with default sensitivity settings.
3. Toggle Raw Input in-game. This setting is controlled per game, so you need to change it inside each game’s settings menu.
   1. Launch the game where the mouse sensitivity is too high.
   2. Go to Settings or Options from the main menu.
   3. Open the Controls or Mouse/Keyboard section.
   4. Look for an option called Raw Input or Raw Mouse Input.
   • Some games handle raw mouse input differently. Try turning it off if it’s on, or on if it’s off.
4. Test with a new Windows local account
   • Settings > Accounts > Other users > Add account > Choose Local account. Log in, install a game, and test.
5. Perform a clean boot. Press Win + R, type msconfig, hit Enter Go to Services tab, check "Hide all Microsoft services," then click "Disable all." Go to the Startup tab and click Open Task Manager Disable all listed startup items

If none of these resolve it, let me know the answers to the questions above and how these steps go.

Please understand that our initial response may not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.