How to enable QUIC through Apache configuration with cPanel

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If LSWS is reading your Apache configuration through cPanel you can use the a directive in that file to turn QUIC on or off at the server or vhost level. Add the following directive to the Apache configuration file.

<IfModule LiteSpeed>
  QuicEnable on|off
</IfModule>

When you set QuicEnable at the Apache server level, all vhosts will use that setting as their default. Vhosts level can not rewrite server level.
Please bear in mind that QUIC should only be used for HTTPS vhosts.

Enabling QUIC at the Server Level

For EA4: Add following lines to /etc/apache2/conf.d/includes/pre_main_global.conf

<IfModule LiteSpeed>
  QuicEnable on
</IfModule>

Enabling QUIC at the Virtual Host level

For EA4: Create a quic_vhosts.conf file in the/etc/apache2/conf.d/userdata/ then add following lines.

<IfModule LiteSpeed>
  QuicEnable on
</IfModule>