Using multiple Reflection Probes to create complex photo-realistic reflections follows best practice and does not impact performance.

Using multiple Reflection Probes can indeed enhance the realism of reflections in a scene, but this method can significantly impact performance. Each Reflection Probe collects data about the surrounding environment, which requires additional computational resources. When many probes are used, they can increase the load on the graphics processing unit (GPU) and slow down rendering times, particularly in complex scenes with a lot of dynamic elements or high-resolution textures.

The best practice is to strategically place Reflection Probes and limit their number to balance visual fidelity and performance. It's often recommended to use them sparingly and only in areas of the scene where accurate reflections are crucial for achieving realism. Thus, the assertion that using multiple Reflection Probes does not impact performance is incorrect.