Ok it seems that my train wasn't the issue, must have been a coincidence that the lag stopped earlier when I changed ships. Sorry for the useless thread.
Ok based on the recent notification to sell your transports, I have been keeping an eye on things and I have noticed that depending on the amount of people (10-14 no lag) but more when I am on my train the server lags... My train is purchased after 4.80 as soon as I get this run finished I'm going to stop using it for awhile and see if it makes a difference....
If I can't use my train I'm going to have to find another way to make money :(
Addendum:
Alright I stopped using it and it seems the server has stopped lagging completely, I don't know if it's just me but I'd like to talk to you Wolfpack whenever you get a chance.[COLOR=orange]