Troubleshooting Already Performed:
I have already attempted the usual troubleshooting steps, including:
Restarting the Nitrado server.
Testing the Humvee on flat pavement and dirt terrain.
Testing multiple Humvees.
Testing the vehicle while completely unoccupied.
Checking whether the issue persists after restarting the server.
Unfortunately, none of these steps resolved the problem.
Because this occurs with the standard Humvee without any vehicle modifications, I suspect there may be an underlying vehicle physics, suspension, or map compatibility issue.