Editor GUI mouse position is laggy

Hey all, would greatly appreciate some help.

I am making a tool in the form of an EditorWindow. Ive noticed the button Hover image is slow to react.

I mouse over the button, wait a second, and then it shows the Hover color. I move the cursor away and it shows the hover coloring for a second longer, then it reverts to normal.

This happens if I remove all code and am simply calling a button as below

GUIStyle buttonStyle = mToolSkin.GetStyle("ToolButton");
if (GUILayout.Button("BeepBoop", buttonStyle, GUILayout.ExpandWidth(true)))
{

 }

What can I do so that the GUI responds instantly? This is important for the feel of the tool.

Thank you!

Just a bump. Hoping someone can point me in the right direction. Cant find anything through google searches why this might be

Still have not discovered a solution to this. Im not sure what could possibly be the issue.
I assume its an editor setting somewhere. Any pointer into the right direction would be a tremendous help.

Thanks.