The Magento_DeferredTotalCalculating module optimizes the checkout process by deferring the total calculation until it is requested for shopping cart or final checkout steps.
0— (Default value) Disable the DeferredTotalCalculating module and use the standard total calculation throughout the shopping process.
1— Enable the DeferredTotalCalculating module to show a subtotal and defer calculating the complete total until in the shopping cart or final checkout steps.
To enable DeferredTotalCalculating, set the
checkout/deferred_total_calculating variable in the
env.php file. For example:
1 2 3 4 <?php 'checkout' => [ 'deferred_total_calculating' => 1 ]
Alternatively, you can set the variable using the command-line interface:
1 bin/magento setup:config:set --deferred-total-calculating 1