The Electrician
As always, a very qualitative analysis of the situation.
Thanks.
Let's try, what will happen at 100kHz.
What I said. Only by measuring ESR, you can see the deterioration of the characteristics of the capacitor. I have been using this factor for 6 years already, to determine the problematic film capacitors in the circuit using a 200kHz ESR meter.
Bad capacitor D/ESR.
Good capacitor D/ESR.