The currently Official Stress Test server running Kolguyev (17516021 EU-FFM) on a badly configured gamemode.
when loading in, the scenario is described as Conflict, not Conflict HQC
There is no command group, no ability to volunteer for commander.
Everything else looks like HQC with group types, supply harbours, etc
Missing commander group means you cannot even request a FOB to be built, meaning the only way to extend signal is via MCU truck, which can only be deployed in one place at any time
Prebuilt bases are too far from each other to reach with relays.
All in all, I think the server is misconfigured currently, and this is the reason there's nobody playing it right now.