Good news, you don't need Voicemeeter for this anymore! The free Audio Radar desktop app works alongside SteelSeries GG, so you can keep Sonar for your mic and chat.
Already have Voicemeeter installed? Close it fully before you install the app, the two conflict.
Download it at audioradar.com/start and follow the guided setup. Got the original Audio Radar? Update the firmware to v1.3.2 first, the PC Setup Guide walks you through it.
Set Audio Radar as your Windows output, and make sure your game's sound output is Audio Radar (or Default). If a Sonar channel like Sonar Gaming is your Windows output, the game goes to Sonar instead and the bars stay dark.
Open Routing and choose your headset under Headset output. That's where you'll hear the game.
Leave Discord on Sonar Chat or your headset. Only game audio should reach the lights.
Pick 7.1 surround if the game offers it, and turn off any 3D, spatial or "headphone" mode. The PC and Game Settings Check Guide has the full list.
Still stuck? Our Discord is the fastest way to get help: audioradar.com/discord. Or submit a ticket and we'll get back to you!