Your microphone might be using the wrong input device. Open User Settings, go to Voice & Video, and check if Discord selected the correct input. Run a mic test right there to verify audio quality. If it still sounds choppy, switch Voice Mode from automatic to Push to Talk temporarily. High CPU usage from other apps also causes voice distortion, so close unnecessary programs. Update your audio drivers through Device Manager if the problem persists.
Check your internet connection first. Toggle airplane mode on and off to reset network adapter. If you see a red exclamation mark next to messages, the server might have slow mode enabled or you hit a rate limit. Wait a minute and resend. Clearing Discord cache helps too: press Ctrl+Shift+I, go to Application tab, click Clear Storage. On mobile, reinstall the app to flush corrupted cache files.
Ping spikes usually come from your ISP routing or server distance. Switch to a voice region closer to your location in Server Settings under Overview. Disable QoS settings in Discord Voice & Video options, as some routers handle it poorly. Close bandwidth-heavy apps like torrents or streaming services. Connect via Ethernet instead of WiFi when possible for stable latency.
Your output device might be set wrong. Check User Settings under Voice & Video and select correct speakers or headphones. Unmute yourself, the channel, and individual users. Right-click your username in the voice channel to verify you are not server-muted. Test output with the Let's Check button. If you hear the test sound but not people, ask them to check their mics.
This happens when hardware acceleration conflicts with capture. Toggle it off in User Settings under Advanced, restart Discord, then try sharing again. On Windows, run Discord as administrator. Make sure you select the correct window or screen when initiating share. Some games with anti-cheat block screen capture entirely, you cannot share those.