Thanks for posting and a warm welcome to the community.
My apologies that you are having issues with your broadband connection.
I've taken a look at your account, the line and hub have come back as fine. There are no faults reported and the network segment is running stable, which is good.
With the speed tests and gaming, are these through a wired or wireless connection? If wireless can you try through wired please.
Can you create a Broadband Quality Monitor please as this will check the performance of your connection? If you do set up the BQM make sure that you go into your router settings > Advanced Settings > Ping > and tick Respond to ICMP echo requests sent to WAN IP.