Configuring Avada to work well with CheckoutWC requires changing two options.
Step 1) Go to Avada > Options
Step 2) Search for ‘WooCommerce One Page Checkout’ in the settings search and turn the feature to Off.
Step 3) Search for ‘CSS Compiling Method’ in the setting search and turn the feature to Disabled.
Step 4) Search for ‘Enable JS Compiler’ and turn it to Off
Most servers use HTTP/2 these days so combining JS or CSS files is generally an anti-pattern and can cause poorer performance.