Err, I’ve been to more than a few German clubs in my time! I worked a year in Berlin once and I know Bremen, Koln, Frankfurt and a few other places reasonably well as I go back whenever I can - which should be more often again soon as budget flights to Frankfurt have just started from my local Airport. Can’t wait for my damaged foot to be fixed! 
I also keep in touch with a moderately well known German rock band whom I got to know in my Berlin days and occasionally do some work for them that helps enable some pretty wild weekends there! 
Yes, a hot sweaty club makes the pheros work better and it is just the environment where you can carry-off a higher-none mix but the downside is that the pheros are used-up faster and exposure to sweat speeds-up the breakdown to smelly byproducts.
The “sweet spot” is the dose that works best for you in any particular situation. You need to do the testing to find it, we can’t tell you.
However, for application points, this thread says it all: