trust me, the reason why you hate the pie menu, is because by default have a too wide radius, and because they do not have a visual feedback like this that tells you that the command is already active just move a few millimeters the cursor …
in addition they have that animation of appearance, which seem to slow down everything (and on heavy scenes you notice a real slowdown) look like a toy
With these tricks of corrections your mind would better accommodate the obvious speed that the pie menus have.
At the moment they seem slow, because the mind thinks of having to wait for the appearance of them and then that it has to go on the button to enable the action …
because it is used to years of old use with classic menus.