• Try enabling Dynamic Bitrate (OBS Studio 24+, RTMP only)
• Try changing servers
• Try lowering bitrate
• Don't stream over wireless
• Try another streaming service (Just as a test)
• Check your firewall / router
• Check your anti-virus / internet security software
• Check bundled network software
• Speed Testing
• Update Network Adapter Driver
• Try the "network optimizations"
• Check the Bind to IP settings
• Bad router or bad networking hardware
• Contact your ISP