How to fix object speed loss when reflected from corners?

Question

Unity

Any ideas?:
https://habrastorage.org/webt/61/65/ba/6165ba4a3d4... "alt="image"/>

Answer 1

See how it's implemented. If through physics, then constantly add speed (or create a physics material, with all Friction = 0 values, except for bounciness, and set Friction combine = "minimum"
At the same time, do not forget to set RigidBody "Drag" and "Angular Friction" to zero .