I have same problem with GPUTweak streaming webcam.
You can try also this steps:
In the Control Panel, under Add/Remove Programs, you can uninstall GPUTweakStreaming from your computer.
1.On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then select Programs from the list:
Windows Vista/7/8/10: Click Uninstall a Program.
Windows XP: Click Add or Remove Programs.
2.When you find the program GPUTweakStreaming, click it, and then do one of the following:
Windows Vista/7/8/10: Click Uninstall.
Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
3.Follow the prompts. A progress bar shows you how long it will take to remove GPUTweakStreaming.