RUSSIAN WAR 173.199.67.67, порт 3114 - режим "Командный Бой"
Russian Roulette 173.199.67.94, порт 3164 - режим "Превосходство"

1. Open Console (`)
Type cl_maxpackets 100
Close Game.

2. Right click on Black Ops Multi in steam games
Go Properties -> Updates -> Untick Enable steam cloud sync.

If the above doesn't work try the following..

3. Steam > Settings > In Game > uncheck “Enable Steam Community In-Game”

*** Also could try another methods, like one of these:

Console Commands:
Draw your FPS on screen:
/cg_drawfps 1
Draw your Lagometer on screen:
/cg_drawlagometer 1
Max FPS command:
/com_maxfps 0

Others:
/cg_fov "80" (GAMEPLAY)*
/com_maxfps "125" (FPS)*
/snaps "30" (REGISTRY)*
/cl_maxpackets "100" (REGISTRY)*
/cl_packetdup "2" (REGISTRY)
/rate "25000" (REGISTRY)
/sm_enable 0 (FPS)*
/r_drawdecals 0 (FPS)*
/cg_drawFPS "Simple" (FPS)
/cg_brass "0" (FPS)
/r_multigpu "1" (FPS)
/r_cachemodellighting "1" (FPS)
/r_cacheSmodellighting "1" (FPS)
/cl_mouseaccel "0" (MOUSE)

Untested:
/r_rendererPreference "Shader model 2.0" (FPS)
/r_vsync "0" (FPS)
/r_smc_enable "0" (FPS)
/r_rendererPreference "0" (FPS)
/r_skincache "1" (FPS)
/cg_blood "0" (FPS)
/com_hunkmegs "512" (FPS)
/r_drawsun "0" (FPS)

Now Type In Console:
/vid_restart

Notes:
*CG FOV :: Field of view, where the value is the angle of the circular arc that is displayed
on your screen. High values will make the game appear "fisheyed".

*MAX FPS :: This command limits your maximum FPS. You may ask why you would want to do this,
and the answer is that it will help the server from having lag confusion when your frame rate
has a sudden rise or fall. Run a timedemo, collect your average FPS and use that as the limit
for when you play on-line.

*SNAPS :: This is possibly the most important setting for getting a good connection.
Snaps setting determines how many updates you recieve from the server. 20 to 30 for
56K connects in quake series 40 for high speed internet im sure the same for cod. (30 is fine).

*MAXPACKETS :: This setting puts a limit on the maximum amount of packets that can be sent to
the server via the client. This setting is useful for people with slower modems. Obviously we
all have high speed connects so set to at least 100. Lower maxpacket settings i.e 30 lowers ping
on screen but at the cost of registration.

*SM ENABLE :: Turns off unique Shadows ingame, it boosts FPS more than most commands.

*R DRAWDECALS :: Turns off details on walls and objects, however Punkbuster will kick you off for this at this time.

Other way is to change your config_mp.cfg in your C:\Program Files (x86)\Steam\SteamApps\common\call of duty black ops\players\config_mp.cfg and change values for these settings:

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.