I'm following this tutorial on how to slow down particles but I do not see the integration tab under physics like in the video. I noticed if I switched to a different physics type, it showed the integration tab but I need the boid physics type for my particular scene. How do I slow down the particles but keep everything else at a normal speed?
Boids Physics for particle systems is controlled in the Movement sub panel of the Physics panel. You can't set speeds, only ranges of influence, but if you want the boids to fly at most half as fast as they are now, you can change Max Air Speed to half the value you currently hae it set at.