[Bug] Sidekiq OOM'd due to excessive memory consumption on 'updarte stats'

[shaman007]

Describe the bug
I'd imported 1 600 000 points for 7 years of Google Takeout data and trying to 'update stats' like countries visited, etc. gets Sidekiq to 3+ Gb. Seems like it wants to process everyting at once, I'd expect it to go month-by-monnth in manual mode.

Maybe let user select what month to update? I have 100 monthes to click, but at the moment it just wants too much RAM.

Version
0.16.4

To Reproduce
Steps to reproduce the behavior:

1. import googlt takeout
2. Click on 'update stats'
3. Sidekiq wants over 3G of RAM

UPD

Without limits it ate all the RAM avaliable.