Forgive me for jumping in here, but I think you might cheapen your analysis when you use the word "random".
I'm also convinced that Millsap's fluctuations cannot be explained by fatigue. So, they must be the cause of something else. If "random" is how you point to the multiplicity of other causes, then fine. But, it's worth considering a host of actual causes. What no one else even considers is that Millsap's fluctuations might have more to do with how the TEAM TEAM TEAM TEAM TEAM was performing; they immediately jump to some conclusion about his essence or some ****.
Like I said above, Millsap's fluctuations lately have a lot to do with our ineffectiveness from beyond the arc. Defenses are starting to key on that, and it ****ing sucks for our post players. Fatigue? No. (Although I would like to see him near 30mpg)