vSphere Client performs slowly on a Windows 7 system

From this KB article from VMware we read:

When running the vSphere Client on a Windows 7 machine, you experience these symptoms:

• The performance of the vSphere Client is slow
• Redraws are visibly noticeable, especially when maximising the vSphere Client

This issue occurs when desktop composition is enabled.
To disable desktop composition:

• Right-click the shortcut for the vSphere Client and click Properties.
• Click the Compatibility tab.
• Select Disable desktop composition.
• Click OK.

Run the vSphere Client.