This seems like a strange issue to me. I don't know why I'd be getting 940 mbps upload, and not a similar download.
My PC is connected via cat6 ethernet cable to G1100 router. The router is directly connected to the ONT via cat 6 ethernet cable. They just provisioned the ethernet port for me today. The mode light on the ONT is flashing gree, which indicates it is provisioned to 1000 mbps (which makes sense since my upload it satisfactory).
Tested on ubuntu 18. On android phone I get 100/300 (which is correct for wifi).