Turn Hardware Acceleration Off (or On)
Turn Hardware Acceleration off or on. For some users, turning Hardware Acceleration off will fix a laggy stream. For others, they need to turn Hardware Acceleration on. Try enabling or disabling Hardware Acceleration. If your stream lag doesn't get any better—or gets worse—switch Hardware Acceleration back to the setting it was before. The Hardware Acceleration setting can be found in Settings > Voice & Video. There is also a Hardware Acceleration setting in Settings > Advanced. Disabling one Hardware Acceleration setting will not disable the other.
Disable Quality of Service High Packet Priority
Disable the Quality of Service High Packet Priority setting. This setting lets your router know that Discord's packets are high priority, so they should get transmitted first. However, this setting can cause problems for some users, and disabling it may fix a laggy stream. The Quality of Service High Packet Priority setting can be found in Settings > Voice & Video.
Turn OpenH264 Video Codec Off (or On)
Turn the OpenH264 video codec off or on. For some users, video codecs can be causing a laggy stream. To check, try enabling or disabling the Open H264 video codec. If your stream lag doesn't improve, switch the video codec back to the setting it was before. The OpenH264 Video Codec setting can be found in Settings > Voice & Video.
Restart Your Computer
Turn your computer off and back on again. Sometimes, random system glitches can cause Discord to stop working properly. If you don't have any luck with adjusting your Discord settings, try restarting your entire computer. Once your computer is back on, check Discord to see if the stream is still laggy.
Restart Your Modem or Router
Turn your modem or router off and back on again. A laggy stream could be caused by a sub-optimal internet connection, which can be caused by issues with your modem or router. If your modem or router has a power button, use that to turn it off and back on. Otherwise, unplug the modem or router for a few seconds, then plug it back in. If you live with other people, make sure that it's okay to restart the modem or router first, as this will cause the internet in your house to go down momentarily.
Run Discord as an Administrator
Try running Discord in administrator mode. Sometimes, a laggy stream is due to a Windows permissions problem. You can resolve this by running Discord in administrator mode. To do this, search for Discord in the taskbar search bar, right-click it, and select Run as administrator. If you want to always run Discord as an administrator, right-click the Discord icon on your desktop, select Properties, then click the Compatibility tab. Check the box that says "Run as an administrator" and click OK to save.
Switch to a Wired Internet Connection
Use an Ethernet cable to connect your computer to the internet. If you are currently connecting to the internet with Wi-Fi, switching to a wired connection can get rid of stream lag. Using an Ethernet cable is more reliable and gets you faster internet speeds, which can help improve your stream performance on Discord. For the best performance, use a Cat 5e, Cat 6, or Cat 6a ethernet cable.
Check Dxdiag
Check dxdiag for issues with DirectX. Dxdiag (or the DirectX Diagnostic Tool) is a tool that reports information about your DirectX components and drivers. Some users have reported that they've fixed a laggy Discord stream by checking dxdiag for problems. To do this, type dxdiag in the taskbar search bar, then click "dxdiag" to run it. The dxdiag icon is blue with a yellow "x" on it. Allow dxdiag to finish loading, then click on each tab and check the "Notes" section for any issues. If dxdiag finds a problem, resolve it before checking Discord again. If dxdiag says a program or file is causing problems but you're not sure what that program or file does, research it before you remove it. Accidentally removing files or programs that your computer needs can cause it to stop working entirely.
Check Your Internet Connection
Make sure your internet connection is stable. If you're having troubles with your internet connection, it can cause issues with your Discord stream. Below are some of the reasons your connection might be unstable, and how you can fix it: Poor Wi-Fi signal: Move your computer closer to the router/modem, ensuring there are no brick or metal walls between them Wi-Fi card driver issues: Update your Wi-Fi card drivers, or roll them back to a stable version if the update caused the problems Worn or old Ethernet cable: Replace with a new Cat 5e, Cat 6, or Cat 6a Ethernet cable Modem or router issue: Replace the modem or router (if you own it) or ask your internet service provider for a new one (if you rent it from your ISP) Outage: Wait for your ISP to fix the issue
Lower Your Stream's Quality
Switch your stream to a lower stream quality. Discord offers a few stream qualities to choose from: 720p, 1080p, 1440p, and source. To change your stream quality mid-stream, click on the streaming button in Discord, then select a different quality in the Stream Quality menu. 1080p is only available for Nitro and Nitro Classic subscribers, and 1440p is only available for Discord Nitro subscribers. If you don't have Discord Nitro, try switching from 720p to source.
Close Open Applications
Close open applications that are using up bandwidth. If you have any open applications that are using up your internet bandwidth, close them (excluding the game you're streaming, if it connects to the internet). If someone you live with is gaming, streaming video, or doing other bandwidth-intensive activities, this could also be affecting your stream quality.
Update Your Graphics Drivers
Make sure your graphics card drivers are up to date. Old graphics card drivers can cause a lot of issues, including making Discord streams laggy. To update your GPU drivers, open your GPU software (such as AMD Radeon Software or NVIDIA GeForce) and install any pending driver updates.
Try Discord in Your Browser
Try streaming from the browser version of Discord. Sometimes, switching to the browser version of Discord can fix laggy stream problems. If you switch to the browser version of Discord and your stream no longer lags, the issue is likely with the Discord app itself. To do this, go to https://discord.com/app and sign in with your Discord account. Then, go to the server or DM you were streaming in and try again to see if the lag is gone.
Clear the Discord Cache
Clear the Discord cache. A cache is used to store temporary data. However, sometimes this data becomes corrupt or just gets old and can't be used anymore, and the cache will then start causing the application to not work properly anymore. To clear your Discord cache, go to \AppData\Roaming\discord on Windows or ~/Library/Application Support/discord on Mac. Within this folder, delete the Cache, CodeCache, and GPUCache folders. You can then open Discord and try streaming again to see if the issue is fixed.
Reinstall Discord
Uninstall and then reinstall Discord. Simply uninstall your Discord application. Then, download the latest Discord installer from https://discord.com and install it.
Contact Discord Support
Contact Discord Support for more help. If nothing else works, try contacting Discord Support for help. Go to Discord's request submission form and select Help & Support from the dropdown. Then, fill out the form with your information and any applicable details. Discord will respond via email for further assistance.
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