SOPHOS Endpoint renders macOS 11.2.3 devices unusable

With SOPHOS endpoint installed on an Intel-based Mac running macOS 11.2.3 - You cannot browse or access online service, use VPN with any stability, use WebEx with telephony, use MS Teams with any stability, and pretty much cannot use your computer.

On my 2019 MacBook Pro, un-installing restored all of my Mac's capabilities.