Well I was just in there and didn't see much but expected it as there were only 4 people
I wouldn't say its connected to fimmwolf's post as he said it was resolved when he restarted his router which would say it was client side not server side.
Ill give it a reboot when they leave but I don't think that would be the cause for the issue. I will be able to check again around mid day tomorrow but if people ain't in there wont be able to do much until Monday as I am away for the weekend.
So I can get some more detail, when it happens how long does it stay for and is everyone effected? You said its like pings increase but do they? Is it at certain choke points in the map or everywhere? Also if you can let me know if the tick is dropping below 64 that would be good.