Question about version_check

I was monitoring the page load using the Query Monitor plugin, and I noticed that the lscache plugin seems to add a POST request to https://wpapi.quic.cloud/ver_check on every non-cached page, which seems to add ~300ms to the total page load time.

If I remove the line 127 from conf.cls.php, the uncached page loads 300ms faster.
Cloud::version_check('activate' . (defined('LSCWP_REF') ? '_' . LSCWP_REF : ''));

Since the page seems to load fine without the version_check, I’m wondering what’s the use for this check?