The currently accepted understanding of physics, as described by Einstein's theory of relativity, suggests that traveling faster than light is impossible for objects with mass. According to the theory, as an object with mass accelerates towards the speed of light, its mass increases, and the energy required to accelerate it further also increases. At the speed of light, the mass of the object would become infinite, and it would require an infinite amount of energy to reach or exceed that speed, which is not feasible.
Additionally, as an object approaches the speed of light, time dilation occurs. This means that time slows down for the object relative to an observer at rest. As the speed of light is approached, time dilation becomes more significant, and at the speed of light, time would essentially stop for the object. This has been experimentally verified and is an essential aspect of Einstein's theory of relativity.
While we cannot definitively rule out the existence of beings or entities from other dimensions, if they were able to travel faster than light, it would imply that they operate under different physical laws than those currently understood. In such a case, their perception of time and space might be different from ours, and they could indeed consider our movements to be slow in comparison. However, it is important to note that speculating about the capabilities of hypothetical beings from other dimensions is purely hypothetical and lies beyond our current scientific understanding.