One or more recommended (PHP) modules are missing


New Member
hey everyone,
i'm a relative newbie to knownhost & am working my way through WordPress performance related tasks for my VPS here.
caching etc.
anyway, site health is alerting me to the above subject line, to be specific:

Warning The optional module, intl, is not installed, or has been disabled.

should i be concerned about this, can i change this (will it make any difference to performance at all)?
i'm guessing that's a no given it relates to internationalization functions - but thought i'd check.
i'm running WHM/cPanel & Apache.
many thanks,