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Windows 7: Screen flicker
Answer ID 4612   |   Last Review Date 12/18/2018

We just upgraded from XP to Windows 7. Why does the CX application flicker?


All supported versions


The screen flickering with Windows 7 and the CX application is a Windows 7 design limitation based on the kernel stack size. Once the hierarchy of windows exceeds a certain size, screen flickering and flickering of the CX application can be seen.

This screen flicker is more prevalent in the 64-bit version of Windows 7.

Some things you can do to reduce this flickering are:

Ensure that your video card is compatible with Windows 7 and that the newest drivers for the video card are installed. To check your video card, follow this link:


Also, ensure that your BIOS, Chipset, and NIC drivers are up to date.


Consider redesigning your workspace and or reducing the number of nested tabs within the application.


The links below provide more information regarding screen flickering with Windows 7.