Using Windows 7, Excel 2010.

I have a model with multiple buttons that have macros assigned to them. When I hover my cursor over them the cursor starts to lag and appear to flicker for some reason. It happens with shapes and inserted form buttons.

I opened a new spreadsheet and assigned a macro to a shape and the same thing happened so it's something to do with Excel not my code I think.

Hovering over graphs, combo boxes and toggle boxes is fine.