We are currently working a new feature that will allow you to use the extra settings on our extension without needing to connect to the VPN server. This feature will be available early in the upcoming year. Until then, connecting to the same proxy server on the extension as your pfSense is connected to, should allow you to use the extension settings with minimal to no performance degradation. If you feel that this answer was worthy, please consider increasing the number of stars on your review of our extension.
