probad esto :
1.Abrir Black Ops MP
2.Abrir el admin de tareas
3.Poner en el steam.exe prioridad baja y BlackOpsMP.exe alta
4.Abrir el juego y a probar
También s puede probar :
n usuario del foro oficial de Steam ha publicado algunos comandos que pueden ayudar a reducir los problemas de lag/shuttering de Black Ops.
No es nada seguro, así que lo mejor es probar e intentar ver si realmente soluciona algo el problema.
El archivo de configuración esta en \Program Files\Steam\steamapps\common\call of duty black ops\players\config_mp.txt
Posiblemente haya que ponerlo en "Solo lectura" DESPUÉS de modificarlo para que no los pise al abrirlo.
Cita:
For those of you that are having issues with lag, I have some information that I hope will help you!
r_multiGpu
This should only be enabled if you have multiple graphics cards or a graphics card with multiple GPUs. If you don't have multiple GPUs, don't know what this means, or are having issues with your MultiGPU solution, please set this to "0".
r_multithreaded_device
This setting should be enabled for EVERYBODY as the minimum requirements for Black Ops clearly states that you need a multithreaded (multicore) CPU to run the game. However, some people have noticed that by setting this to "0" some of the skipping lag is relieved. Test this out only as a last resort.
r_vsync
VSync prevents screen tearing. If you don't know what that is, just set it to "0" because you probably don't care anyway. Otherwise, VSync usually doesn't have any negative performance issues with today's graphics cards. However, there may be a few performance issues linked to VSync with the current release of Black Ops. Try setting this to "0" for compatibility.
r_blur_allowed
This setting enables Blur shader effects. If you have a strong shader card, this setting may be negligible. Otherwise, just go ahead and set this to "0".
r_distortion
This setting enables Distortion shader effects. If you have a strong shader card, this setting may be negligible. Otherwise, just go ahead and set this to "0".
r_dof_enable
This setting enables Depth of Field shader effects. If you have a strong shader card, this setting may be negligible. Otherwise, just go ahead and set this to "0".
r_glow_allowed
This setting enables Glow (HDR?) shader effects. Normally, this should have a negligible performance impact. HOWEVER, this setting seems to be buggy! Performance improved DRAMATICALLY when I set this option to "0".
rate
Rate is the rate at which the client sends packets to the server. If you set this too low, below 10000 or so, you run the risk of sending insufficient data to the server and lagging out. Set this too high, above 50000 or so, and you run the risk of flooding your connection to the server. This setting should be adjusted according to your connection speed and may take some fine tuning.
cl_maxpackets
This setting controls how many packets the client will hold to ensure packet transmission. If you set this setting to low, below 20 or so, then you run the risk of being disconnected prematurely. If you set this setting too high, above 150 or so, then you run the risk of continually resending redundant data and lowering your ping (or worse, getting choked). This setting is very hard to tune because it depends on so many factors beyond your own connection. Most people have found setting this to 100 is a good compromise for most servers.
También podeis probar de instalar el directx9c y comprobar el Firewall
en que te basas? (eres al que le han contestado el mail?
![[fumando]](/images/smilies/nuevos/fumando.gif "fumando")
no me lo puedo creer, meristation entrando con el cuchillo defendiendo al jugador pcero? 
![[ok]](/images/smilies/nuevos2/okis.gif "ok")
