Many Rainbow Six Siege gamers keep complaining about the PC lagging issues. The word lag is always a pain in the ass. Actually, PC game lagging happens a lot and unexpectedly on Windows 10/8/7, but the good news is that this can be easily solved. For Rainbow Six Siege lag, in particular, we’ve put together some fixes that have helped other players.

Check your PC specs first

No matter what kind of game issues you’re facing, you’d better check your PC specs first to see if your PC meets the mimum requirements of Rainbow Six Siege. Although Rainbow Six Seige is pretty an old game, released in 2015, it has a faurly high demand on your RAM.

A quick way to check your PC specs: type dxdiag in Windows search bar, and press Enter.

Minimum Requirements

Operating System 64-bit Windows 7 SP1 / Windows 8 / Windows 8.1 / Windows 10
Processor Intel Core i3 560 @ 3.3 GHz or
AMD Phenom II X4 945 @ 3.0 GHz
RAM 6 GB
Video card Nvidia GeForce GTX 460 or
AMD Radeon HD5770 (1024 MB VRAM)
Hard Drive 61 GB
DirectX 11
Sound DirectX Compatible Sound Card with latest drivers
Supported controllers Compatible with X-Input
Multiplayer Broadband connection with 256 kps upstream

Recommended requirements

Operating System 64-bit Windows 7 SP1 / Windows 8 / Windows 8.1 / Windows 10
ProcessorIntel Core i5-2500K @ 3.3 GHz or AMD FX-8120 @ 3.1 GHz
RAM 8 GB
Video cardNvidia GeForce GTX 670 or
AMD Radeon HD7970 / R9 280X or better (2048 MB VRAM)
Hard Drive 61 GB
DirectX 11
Sound DirectX Compatible Sound Card with latest drivers
Supported ControllersCompatible with X-Input
Multiplayer Broadband connection with 512 kps upstream

Note: Rainbow Six Siege conflicts with MSI Afterburner, SLI and Crossfire, so you’d better close or uninstall them. It’s also helpful to kill Discord for it really eats up a lot of CPU. What’s more, remember not to overclock your PC.

Try these fixes

After comparing your PC spec with the minimum requirements, you’re ready to try these fixes below if there’s absolutely no problem with your gear. You may not need to try them all; just work your way down from the list until you find the one that works for you.

  1. Update your device drivers
  2. Lower your game settings
  3. Disable fullscreen optimization
  4. Chnage CPU priority to High
  5. Turn on V-Sync in game
  6. Limit Rainbow Six Siege FPS
  7. Repair Visual C++ Redistributable Packages
  8. Delete temp files
  9. Disable in-game overlay on Uplay and Steam
  10. Turn off game mode

Fix 1: Update your device drivers

First make sure you have the latest graphics driver, sound card driver and network driver installed, especially the graphics driver, for an outdated driver of these three devices can deliver a really unhappy gaming experience.

Manufacturers like NVIDIA and AMD keep releasing new graphics card drivers designed for lately released games, also for old games to improve performance and fix bugs. Therefore, you may need to check for updates in NVIDIA or AMD and install the latest driver every time your game lags, crashes or freezes.

Besides manually updating your driver, you can do it automatically with Driver Easy if you don’t have time or patience to do that yourself.

Driver Easy will automatically recognize your system and find the correct drivers for it. You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing. Driver Easy handles all.

Plus, you can perform a driver back up, driver restore, driver uninstall easily with its additional tools.

How to update drivers with Driver Easy?

You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 clicks.

1) Download and install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.

3) Click Update next to your graphics card driver, sound card driver or network driver to automatically download its correct version, then you can manually install it (you can do this with the FREE version).

Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system. (This requires the Pro version which comes with full support and a 30-day money back guarantee. You’ll be prompted to upgrade when you click Update All.)

4) After updating your drivers, please restart your PC to make sure Windows is ready for the new drivers.

If you need assistance, please contact Driver Easy’s support team at support@drivereasy.com.

Fix 2: Lower your game settings

Adjust your graphics settings to see if the performance picks up a little. This is not a gurantee fix, but it definitely worths a try.

1. Important graphics settings

Texture QualityMedium or Low (if you have a low FPS)
Texture FilteringLinear

2. Unnecessary graphic settings

  • Set the following options to LOW:
LOD QualityLOW
Shadow QualityLOW
Shading QualityLOW
Reflection QualityLOW

However, it’s not recommended to set your Shadow Quality to low or off, or you won’t be able to see people’s shadows. You can set it to medium instead if you do need this feature. Don’t go higer, because the sad truth is that it can really make your game slow.

  • Set the following options to OFF:
Ambient OcclusionOFF
Lens EffectsOFF
Zoom-In Depth of FieldOFF
Multisample Anti-AliasingOFF
Post-Process Anti-AliasingOFF

Settings like antialiasing and ambient occlusion for example can reduce your framerate significantly. If your feel your game is choppy, try turning them off.

Fix 3: Disable fullscreen optimization

Fullscreen optimisation is a blend between borderless and fullscreen. This feature might be the culprit causing the Rainbow Six Siege to lag. Here’s how to disble it:

1) Go to the directory where you installed your Rainbow Six Siege.

Note: If you’re not sure where it is, you can run Task Manager (Ctrl + Shift + Esc) and go to the Details tab when the game is still running. Right click your .exe game file and select Open file location.

2) Right click your Rainbow Six Siege.exe file and select Properties.

3) Go to the Compatibility tab and tick the box Disable fullscreen optimization and also Run this program as an administrator.

4) Click Apply > OK.

Fix 4: Chnage CPU priority to High

Changing priority to high helped many players fix their Rainbow Six: Siege lag issues. Here’s how to do it:

1) While the game is running, press Ctrl + Shift + Esc at the same time to open Task Manager.

2) Go to the Details tab and locate your Rainbow Six: Siege.exe. Right click the main .exe file and move over to Set priority, then select High.

3) Confirm the change if you’re prompted for permission.

4) If this doesn’t work for you, select the .exe file in the Task Manager and select Set Affinity, then uncheck thebox CPU 0 and click OK.

Fix 5: Turn on V-Sync in game

V-Sync helps synchronize your games screen refresh rate to the specifications of the monitor. Since most people prefer to turn off V-Sync in game and it does fix some major issues sometimes.

For Rainbow Six Siege, however, if you’re experience serious lag or stuttering, you can try turnning it on instead. Some gamers find turning on V-Sync in the Display settings fix their lagging or stuttering issues.

Fix 6: Limit Rainbow Six Siege FPS

Rainbow Six Siege has a built in FPS cap that can be accessed by the GameSettings.ini which is located in your Rainbow Six folder under your My Games folder.

Here is how to find the setting files for Rainbow Six Siege:

1) Go to %USERPROFILE%\Documents\My Games\

2) Select Rainbow Six Siege, and you will see a string of random code which is your ID. Inside this folder is GameSettings.ini.

3) Open the setting file and locate [DISPLAY]

4) Set FPSLImit to 60.

[DISPLAY]
FPSLimit => Limit the game's fps. Minimum of 30fps. Anything below will disable the fps limit.
Brightness=75.000000
FPSLimit=60

Fix 7: Repair Visual C++ Redistributable Packages

The chances are that outdated, missing or corrupted Visual C++ Redistributable Packages is causing the Rainbow Six Siege lagging issue. Games which are programmed through C++ rely heavily on these files, therefore you can troubleshoot the lagging issues by updating to the latest C++ Redistributable for Visual Studio.

You can go to the Microsoft offcial website for the latest supported Visual C++ downloads.

After reinstalling, try playing your game again to see if the lagging issue still bothers you. If the annoying lag persists, you can try the next fix.

Fix 8: Delete temp files

Deleting your temp files can effectively help you free up disk storage and reduce your PC lag, therefore fixing your Rainbow Six Siege issue.

1) Copy & paste %temp% into the File Explorer address bar and press Enter.

2) Press Ctrl + A to select all the temporary files and press Delete.

Note: Some files may not be able to be deleted. If you are prompted about files that are missing or in use, click the check box next to Do this for all current items and click Skip.

Fix 9: Disable in-game overlay on Uplay and Steam

This method works for many players as it will stop overlay conflicting if that’s the cause of your Rainbow Six Siege lagging issues.

1) Open Uplay and click the gear icon on the top right corner.

2) Click Settings, then go to the General tab, and uncheck the box Enable in-game overlay for supported games.

3) Open Steam and navigate to Settings.

4) Go to the In-Game tab, and uncheck the box Enable the Steam Overlay while in-game.

Try playing Rainbow Six Siege again to see if the lag is gone for now.

Fix 10: Turn off game mode

1) Type game mode in the Windows search bar and select Game Mode settings.

2) Toggle Game Mode off.

This works for many Rainbow Six Siege players, and you can also turn off everything related to Game DVR or game recording if this didn’t do the trick.


If all fails, you may need to clean reinstall the Rainbow Six Siege. This may be the last resort and for the most of the time it really works.

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