fatigue vs. PI of growth

On the one hand fatigue is recommended, when hanging.
On the other hand one should stop and rethink the routine if a positive indicator of growth went south.

Im saying this, because yesterday I started hanging again. I used 4lb for my 3 hour session.
I did some massaging in the breaks to get a little more blood circulation.
In the middle of the session (after 1,5h) I noticed that my erection was a little bigger and harder than normal.
I thought “Great, it feels like I am on the right track”. So I kept hanging for another 1,5 hours, since I still did not feel fatigue.
At the end of the session, I did not really feel fatigue. I tried to get an erection, but this time it was even weaker than normal.
Should I have stopped earlier because the PI of growth was still there or do I have to ignore it this time?
How do I know, when to listen to fatigue or to the PI of growth?

In my opinion there is nothing strange if you have problems to get 100% erection after a demanding PE session. Your penis is tired and need some recovery time. If you still have problems after 5-6 hours or the day after you are probably doing it a little to much.

I see.

My problem is just to find the sweet spot, where I am not doing too little nor too much hanging.

So paying attention to PI for growth only applies after a little recovery time.

If erection is still bad, then it was too much.

Yes, that has happen to me a couple of times with pumping to much and with to high hg.

But after a couple of days rest EQ was back.