Keep the Elementor panel short and load nothing you do not use.
Pro adds 80 widgets, 10 extensions, a Theme Builder and 32 dynamic tags, and keeps every free widget. From $18 a year, with a 14-day money-back guarantee.
If you switch off the Display Conditions extension, everything it was hiding becomes visible again. Switch it off only if no page depends on it.
You do not need to switch widgets off for speed. Every widget loads its CSS and JavaScript only on pages where it is used.