I've been having the same problem with my M350 package. Jdoe94 I can tell you now it is most probably not your equipment that is at fault but the Virgin Media network which is oversubscribed in your area. Also if I were you I'd run another BQM from ThinkBroadband as the image you have attached looks like a completely dead line.
Since the end of March I have been experiencing extremely bad lag/latency between 8:00am and 11:00pm. The only way I can get some decent online gaming is if I play from around midnight until the early hours of the morning which is ridiculous and not what I signed up for. I can see with other users the tech support are making them jump through hoops and saying some estimated date for their network to be fixed which keeps getting pushed back, 3 times so far.
I have been running a BQM since March 27th till this very day and all the days in between look nearly identical; high latency hits my connection at 8:00am and doesn't finish until 11:00pm.
Here is my BQM from April 2nd

If image doesn't work then go here:
https://www.thinkbroadband.com/broadband/monitoring/quality/share/0379b2c75d3e866fddcea3224f7f5639a8...
Here is my BQM from yesterday, June 10th

If image doesn't work then go here:
https://www.thinkbroadband.com/broadband/monitoring/quality/share/355ac98a157e2338a2ecbadad98d40511cf63025-10-06-2020
If I am not able to get a definite answer on when this will be resolved, which is clearly a network that can't handle this number of simultaneous users being home at the same time due to the lockdown, then I will be taking my business elsewhere.