Hello Αλέξανδρος Πελιβανίδης,
Welcome to the Microsoft Community.
It sounds like you're experiencing a common issue with input lag and audio interruptions when using Alt + Tab in full-screen games. This is a feature or design that has to be incorporated so the system works properly and it is not a glitch. Here are a few suggestions to help resolve these problems:
- Disable Fullscreen Optimizations:
- Right-click on the game executable or shortcut.
- Select Properties.
- Go to the Compatibility tab.
- Check the box for Disable Fullscreen optimizations.
- Use Borderless Window Mode:
- Instead of playing in full-screen mode, try switching to Borderless Window mode. This can often reduce input lag and prevent audio interruptions.
- Check Background Processes:
- Open Task Manager and check for any background processes that might be using a lot of CPU or memory. Terminate any unnecessary processes to free up system resources.
- Disable Hardware-Accelerated GPU Scheduling:
- Go to Settings > System > Display > Graphics settings.
- Turn off Hardware-accelerated GPU scheduling.
These steps should help mitigate the delay and improve your overall gaming experience. If the issue persists, you might want to consider reaching out to the game's support team for further assistance.
Regarding your second issue that Edge cannot play music while working in background, we recommend you check your settings related to "Performance". These settings can prevent Edge from working or playing media sources in the background or when you are playing full-screen games.
Best Regards,
William.Y | Microsoft Community Support Specialist