I have ensured the explorer settings are as you require.

I run the game from Steam so i have no desktop launcher to set to administrator rights.

When going through the troubleshooting steps with your support previously I opened up the required ports on the router, although the router does dynamically assign internal IP addresses to network devices so they only stayed on my PC for a day or 2, before my old address was given to a sonos speaker.

This morning the connection was fine on ping plotter, but right now the last but one hop has massive latency, and hop 9 has 27% packet loss (I have seen it higher in the past) see below.

7 28 ms 26 ms 23 ms m686-mp2.cvx1-b.lis.dial.ntli.net [62.254.42.174]
8 23 ms 22 ms 29 ms 213.46.174.118
9 32 ms 28 ms 28 ms ldn-bb4-link.ip.twelve99.net [62.115.120.238]
10 38 ms 58 ms 38 ms prs-bb2-link.ip.twelve99.net [62.115.133.239]
11 41 ms 39 ms 37 ms ffm-bb2-link.ip.twelve99.net [62.115.114.99]
12 46 ms 48 ms 40 ms ffm-b10-link.ip.twelve99.net [62.115.137.211]
13 44 ms 44 ms 39 ms kddi-ic301630-ffm-b10.ip.twelve99-cust.net [62.115.32.110]
14 38 ms 40 ms 38 ms 195.82.60.29
15 48 ms 39 ms 60 ms 195.82.61.14
16 1278 ms 1281 ms 1069 ms 195.82.50.234
17 36 ms 43 ms 38 ms 195.82.50.50

I am not a network engineer, so I am asking will this cause a problem, how much latency will the game cope with before it assumes the connection is lost?

I will let you know if the explorer changes have any effect.