Hello @Anton Karatkevich.
I try to keep the STG calculation times within reasonable limits, When we change years and I start opening periods in the future, build times start to increase.
Right now we are about180-240 mins, but towards the end of 2023, it started growing towards 500-600 mins.
I set the Project Start date to Jan2023 and calculation times went down to ~50%, as you can see.
Also, sometimes I'll set some older periods as not calculated. They are still accessible, but CT doesn't pre-calculate them. It's another option.
What I do is storing critical data for the whole year, that I then make available in a report we call Historical Data. Yes, it's incomplete, but it cover our main use cases.
I hope this helps.
Guillermo