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While Chrome has this issue, TLS 1.3 can be disabled as a workaround. Also, Firefox for Mac  also has this issue causing performance problems and SSL error results when trying to display a page. On Firefox, TLS MAX version setting can be changed from 4 to 3 to support the max version of 1.2, eliminating performance and SSL error results.

Visit about:config, search for TLS and change security.tls.version.max to 3.

In the short term, this will work, however due to the nature of changing security concerns, it is important to support TLS 1.3 in mono. This is not a ConnectWise Control specific issue, rather the limitation of what mono will support due to the base .net libraries supported.