Waaaaaayyyy
It appears to be solved
My 5GHZ ac usb wifi stick was causing the probs. I reset it to 2.4 then it lagged...prob because it was about 34MB/S. So I put my old 600n and get about 130MB/s to my Router witha static IP.
Why it effects the LAN is beyond me.....but a bit of research about BT home hub 5 shows a multitude of sins.

Thanks for all of the replies and effort....much appreciated.

Quote from Scawen :

Have you tried restarting the router, and restarting your computer? Sorry about the obvious suggestion but some people never turn off their computer and have been known not to try a restart!

Vanishing cars can sometimes be cured by clicking the "UDP" button in the connections list. That is visible in the game setup screen or when you click N while in game. That will change to "TCP" and you will be receiving car position updates by TCP instead of UDP. However, that doesn't really sound as if it would solve your problem, because you are also getting disconnected from the server. So it sounds like you are losing all packets, not only UDP...

Quite strange as LFS is really reliable with its connections. Are you using any software firewall that can be switched off, for a test? If so, please try it, and do try restarting the PC and the router / modem if you have not yet. Also, if you are using a wireless connection, can you try connecting directly with a network cable?

Ok....thanks for the input.

I have tried all of the above and even set up port forwarding ....................still the same unfortunately

Installed LFS on an old laptop.....worked fine (low FPS on low settings but to be excpected as its a AMD sempron with 2GB ram)

This more or less rules out the internet connection. Money not well spent....may consider asking for a refund as it is all but useless for what I bought it for....online racing.

Ok thanks for the replies

Heres the spec:

Win 7 enterprise
i7
16 gb ram
AMD HD8490 graphics

I have turned down graphics etc etc.

Nothing else connected to internet in house.

I noticed that when i first connect to a sever FPS is around 65 then when the cars vanish and the green seconds take their place the fps goes to about 100

All other games play ok

Last edited by Listener666, Mon 15 Jun 2015, 10:18.

Hi i have returned to LFS after quite a few years.

My problem is everything works fine off line.

When I connect to a server i can usually go into the pit can sometimes spectate for about 20 seconds and have started 1 race. I then lose sight of the other cars ( i only see a name and some timing numbers in green) then I lose connection to the server. Similar when spectating.

It sounds like lag but I have a good internet connection 30ish ping and 20-30 MB download -7 MB upload.

Any ideas welcom