Trying to make a laser in the particle system. All is well until I increase Start Speed

I followed along to a tutorial and made a laser in the Unity Particle System that I’m happy with. The laser however was slowww. So I cranked up the Start Speed as I would like the laser to hit the target instantly. The downside however is my laser was subsequently chopped up into a bunch of individual particles / balls instead of a constant stream.

How can I keep my laser solid but increase its speed so that I can create a rail?

Thanks guys/gals!

Try changing its render mode (in Renderer) to Stretch Billboard and Length Scale to bigger number.