From looking at all of the replies and posts on this forum VM is not fixing any of the congestion/over-utilisation issues. They just provide you with a fault number and a fix date some time in the future, once that date comes, they move the date a month or so into the future again. All they're doing is buying time until more people go back to work and use their VM internet less so they don't have to spend any money to fix the actual issues.
My latency has been absolutely terrible as seen below since early March and been given around 4 different "fix" dates.
https://www.thinkbroadband.com/broadband/monitoring/quality/share/6ed863521fdb2ed3e9bf9181384fa91c90f74e4b-25-06-2020
Virgin Media does not care about this and will not provide any compensation because "speeds look fine, try restarting the router". Gaming and working from home is pretty much impossible due to these latency issues.
I hope your issues are fixed but from looking at this situation since this has began, I would not get my hopes up. If you're still within your 14 day cool-off period, I would look into cancelling the contract and looking elsewhere to have a more stable connection.