[miheermunjal]

forgive my ignorance here (new to Mac), but which setting is this specifically?

[LeoNatan25]

In System Preferences, under Accessibility -> Display, there are two settings of interest: “Reduce motion” and “Reduce transparency”. The latter is the more important.

[jibreel]

try in settings->Accessibility->Reduce transparency. this will also make the OS more responsive (minimizing, switching windows....)