Follow the below steps to make DCS look good in VR
1. Adjust Game Settings just Lower graphics settings in DCS World for better performance.
2. Check VR Settings and Lower VR pixel density if high and adjust render scale for smoother gameplay.
3. Check for the Update for Drivers, keep your graphics card drivers up to date for better compatibility.
4. Try higher resolutions for better visuals if your system can handle it.
5. Look for community mods that may improve performance or visuals.
6. Consider Hardware Upgrades, If performance is still poor, think about upgrading your GPU or CPU, or you can look for tools that can help optimize VR performance.
Hope these steps may help you to improve the VR experience in DCS World on your Meta Quest 2 headset.