I m speaking about that product :

http://syndication.intel.com/D ... mp;ppc_cid=GF1_0055034901

6600 series

LFS is the only game I ve problems, and only online. It works fine if I cut the 1rst processor, as described in the link in the original post.

So I bet it's a LFS problem, and if needed I can help devs if they need smth from my machine.

S0LVED

- see primary post
- works only with dual processor slow down

Hi all,

Please have a look there http://www.lfsforum.net/showthread.php?p=299499

It's a post I wrote a few weeks ago, to try to solve my problem.

Assuming this game is the only one that shows this symptoms, and that it happens always at same places, it looks like a kind of bug.

Using programs that monitor my CPU's, I discovered that CPU 0 used a IRQ request that makes game slow down to 20-25 fps always in the same parts of tracks, making driving very hard and not funny.

If I remove CPU 0 from lfs.exe process (using CTRL-ALT-DEL), game works fine with 150 fps instead of 180.

If devs need I can send them what they need to solve this problem (reports or so)

Thanks

Hi all,

I ve made many tests and I ve an idea where the problem could be, even if I can't solve it yet.

GPU and Processor are not overheating, and I tryed to remove sound acceleration or use it to basic, I still have the same problem.

Furthermore now computer crash quite often with reboot needed, in 2 cases : LFS running or video played with BSPlayer Pro (working fine with media player). Strange thing, sometimes, like 1 on 4, when Windows rebooted, my internet connection cannot be launched and sometimes sound is strange and laggy, so computer needs another reboot.

The only thing strange I found, is that 1 of the 2 processors of my dual core (actually the one numbered "2") is randomly but like every 5-20 seconds raising up to a 80-90% usage, with all programs off. It seems that every time I ve a slow down in LFS processor raise up to 80-90% usage, while processor 1 is still around 5% usage.

I m trying with CTRL-ALT-DEL to define wich process is the cause of all of this, but I haven't found anything yet.

Can somebody confirm that the CPU usage is normal or not, so I would know where to continue my searchs.

Any ideas welcome too

Thanks therefore

Bloody hell, this problem is back...

I found a way to reduce it : by installing december version of directX (my previous one was from augustus), it's way better.
Lag is still present sometimes but less often, and even laggy I ve better fps. Sometimes, it's going down to 20 and game crash once every hour too.

Will continue my tests, I hope I will find it one day cause it begin to annoy me a lot.

And happy new year all

Hi,

First of all, thanks all for your help.

After many many many tries, I finally found what was wrong.

I did absolutely everything what you advised me in each post, without any result.

I was about to throw the computer through the window, when I finally tryed what MadCatX said :

Quote :

Boris is pointing to Vertical Sync. It is in Options>Misc>VSync. If it caused an issue, it would be same for CRT,LCD or any other screen. Swith it off, just to make sure.

and it worked.

3 days lost to finally switch 1 option to off and find all working good.

Thank you so much.

Now for info, I ve a fps range from 70 to 160, usually turning around 140 with quite all options on. There is still a slow down on the same sections as before, but a slow down to 70 fps instaed of 15-20 is quite supportable.

I hope it will help others drivers.

Have fun

[SOLVED - see under the ------ line]

Hi all,

I m experiencing heavy lag in some circonstances, with my new computer.

Computer :

Dual core 6600 Intel + Thermaltake
2 GB Ram Corsair 6400
HD SATA2 Seagate 320 GB 7200
MB ASUS P5B-VM
MSI Geforce 7950 GT 512MB

Windows XP Pro +SP 1+2 + everything up to date
Anti-Vir AVG latest version
Anty Spyware Spybot SD
Drivers 93.71 forceware (installed after a cleaning of all previous drivers)
Fresh LFS install

My problem :

With graphics details high or low, I ve this happening :

After some laps or sometimes at start, my framerate (usually between 75-90) is going down to 15-30 only in some sections of the track.

For example, on blackwood classic, I ve this happening in 1rst turn right, a little bit before 1rst bridge, just at split 2, in last left and passing near pits. It happen for half a second to 3-4 sec max, then everything comes back good.

I tryed it on different cars/tracks, different graphics configurations, with some light improve but nothing without this unplayable lag...

Computer processor and graphic card processor are not overheating (checked it too), I still have to do a ram test (we never know) but I think the problem is elsewhere.

Can anyone help please ?

Thanks therefore

---------------------------------------

PROBLEM SOLVED :

I finally find out where was that crazy problem annoying my online game for months :

Do a CTRL-ALT-DEL, and on LFS.exe process, right clic then choose the last option ("définir l'affinité" in french).

Next step is to desactivate processor 0 on process, and keep only processor 1, and your problem is solved.

Of course this solution works only for Intel bi-processor bugs (I ve a 6600). Sounds like online lag comes from CPU0 doing a kind of IRQ request that makes game slow down to 20-25 fps for a second or so. Assuming it's always in the same parts of track, I m pretty sure it's a in game bug (this is the only game wich I ve problems with)

Using only 1 CPU lower fps from 180 to 150, but removes that crazy bug.

I hope it helped some.

Last edited by Lereseau, Sun 25 Feb 2007, 01:36. Reason : Solved