VistaMenu MenuItem Flickering in PowerShell

Referencing this post:

https://wyday.com/forum/t/31204/powershell-vistamenu/

When i assigned multiple menuitems with an image on each the ContextMenu, I have noticed a slight flickering/refresh visual issue when navigating across each menuitem. Now, is there a standard size dimension i should be adhering to when using images for the menuitems?

*I am using 20x20 images to better match the feel of Windows 11 spacing with the menuitems as the larger image spaces out the padding. Could this be the issue? If so, how can i avoid the issue with the 20x20 image dimension?