Remove the comment about "heavy calculations"

[eringerli]

On my system, the calculations are done in about 20ms, so it is nowhere near any kind of risk to the system. Sure it is a AMD Ryzen server, but even on RPIs it never took more than 50ms.

[jmcollin78]

It is 5% CPU on my system. I have 13 controlables devices and to find the suitable solution, I think the algo should run relatively for a long time. This is not the case with a few number of devices when there is not many combinations.

So I would rather keep the comment.