Why is the AZInsight extension running slow ?
If see a that AZInsight taking a long time to load or the blue spinner indicator taking spinning for a significant time ( greater than 5 seconds) this may indicate you have too many background extensions running at the same time.
It is recommend that you disable any extensions which may be performing similar features as AZInsight such as checking stock, reviews. Examples of extensions that may cause issues include : Helium 10 , AMZScout, HowMany?, Amzpecty, BuyBotPro.
Turning off these extensions is all that is needed.Please refer to this article