Lets be fair with the speed of light measurement for one minute before continuing with the topic.
In reality, no one knows with total accuracy what the speed of light is. The current measurements of the speed of light are made inside our solar system. In other words, inside the Sun's gravity. By following the several ideas about the INFLUENCE of the gravity of a star on the speed of light, we can conclude that the current speed of light measurements are subjected to the influence of the gravity of the Sun.
Question is, what about light traveling outside the solar system when it is not under the influence of the gravity of the Sun?
By fact, the speed of light outside the solar system must be different in case it is true that the gravity of the Sun affects its motion.
So, please do not, read clearly, do not take for granted your 186,000 miles per second as the "universal speed of light" because such is a belief and not so a scientific fact. The best you can say is that 186,000 miles per second is the speed that we can measure so far inside the solar system, but that the speed of light as a standard in the universe do not exist and we don't know with certainty what it is.
To stick with 186,000 miles per second as the universal speed of light as the official speed is to lean on the arms of the obstinate, were conjectures are taking for fact, and science is insulted every time an individual thinks that way.
About the perception of motion, (because no one can perceive time, time is a measurement based in comparing motion of things), insects indeed might perceive motion different than we do, but about the ones who believe that such perception will be a huge difference, I can tell that they are the ones falling in a greater illusion.
This is to say, they are saying that a three feet person perceives motion different than a six feet person... it might be true, it might be a myth... unfortunately there is no way to confirm it because it is about a personal perception.