In the wp_options table the widget_logic_options is 4MB

[bedmas]

Is there any reason why this is option is 4MB. Is there a way to optimize this value?

[kasparsd]

That option is used to store the visibility rules for all widgets (similar to how WP core stores all widget placements per sidebar in a single option). Could it be that the site has a lot of unused widgets from undefined sidebars (used by previous themes for example)?

Technically the plugin should always delete all the visibility settings for nonexistent widgets here:

widget-context-wporg/src/WidgetContext.php

Line 304 in ecd82f4

// Remove non-existant widget contexts from the settings