To improve more  your WP Admin dashboard loading  speed please add the  code in your functions.php current theme below. Your addons should be in latest version and your PHP version should be php 8.1.x .

add_filter('disable_update_l','custom_automatic_check_update' );   //Disable WPCargo License Helper  update
add_filter('disable_update_cf','custom_automatic_check_update' );   //Disable WPCargo Custom Field  addons  update
add_filter('disable_update_fm','custom_automatic_check_update' ); //Disable WPCargo Frontend Manager Dashboard  addons  update
add_filter('disable_update_ae','custom_automatic_check_update' );  //Disable WPCargo Advance Email addons update 
add_filter('disable_update_ab','custom_automatic_check_update' );  //Disable WPCargo Address Book addons update 
add_filter('disable_update_ie','custom_automatic_check_update' );  //Disable WPCargo POD addons update 
add_filter('disable_update_pod','custom_automatic_check_update' );  //Disable WPCargo POD addons update 
add_filter('disable_update_sms','custom_automatic_check_update' ); //Disable WPCargo SMS addons  update 
add_filter('disable_update_r','custom_automatic_check_update' ); //Disable WPCargo Receiving/Barcode Bulk Update  addons  update 
add_filter('disable_update_sc','custom_automatic_check_update' ); //Disable WPCargo Shipment Container   update 
add_filter('disable_update_inv','custom_automatic_check_update' ); //Disable WPCargo Invoice Addons   update 
add_filter('disable_update_user','custom_automatic_check_update' ); //Disable WPCargo User Management   update 

function custom_automatic_check_update() 
{ 
return false ; 
}