From what I can see there is no mispoint to your antenna. The bad upload speeds seem to be caused by network congestion. We cannot offer a fix for that at this time, but from what I’ve analyzed, if you switch to the Viasat unleashed plan you can get similar performance for a lower price.
During the peak period, usually the evening, we’d recommend connecting fewer devices to your network, not using VPN, and connecting your device via Ethernet cable if possible.
I understand this is not ideal and I apologize for the bad situation with your service.