Thanks for coming back to us, I'm sorry to hear the problems are ongoing you've been monitoring.
I've checked again and all the power levels on the hub are within range, some of the downstreams seem to be a little high but not to the point of causing a problem. They also were lower when you originally posted, so it's likely just normal fluctuations and not the main cause of the problem.
Can you tell me a bit more about what's happening on your side please? Given that the hub and network look OK, we'd need a bit more information to understand the root of the problem.
Does this only affect online gaming, or is your whole connection demonstrating problems (browsing, streaming etc as well)? I'd recommend setting up a Broadband Quality Monitor as well. That will record any periods of latency of packet loss and help us to match up to any network events happening at the time.
You'll need to leave that running for 24 hours to get a full set of results, just post it back here when you've got those and we can take a further look.