I'd suggest you don't waste your energy in determining the stage of your application based on IP1/IP2/etc...
They hold no ground for such assessement, as many have been "stuck" in so-called stages, thinking there were no advancements on their application, only to have the good news of getting PPR later.
Claims that IP1 is for this assessement (R10, etc...) and IP2 for that assessement (eligibility, security, etc...) isn't valid anymore, especially with the new biometrics requirements. It's very common now to have applications go straight to "We are Processing your background check" as soon as application is submitted.
Don't sweat over it. Just know that the standard processing time is 6 months.