Is 'In-Game Overlay' enabled in 'Settings > Preferences', disabled hides it in performance settings.
Is 'Alt+R' a different issue (it's not the hotkey for the metrics) ?
My PC- Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T.