Scaling piwik

Hi

We are using piwik for internal reporting. We are currently working on piwik 1.12.

And we see following issues:

  1. custom date ranges - UI is stuck if we pick custom date ranges.
  2. Mini graphs are not often loaded.
  3. Daily archival runs for 2 hours.

I did most of the customization from here except for apache server - Optimize and Scale Piwik - Analytics Platform - Matomo

we have 700 apps, and each might have 1 to 2Million visits and 1Billion pageviews. Will the above performance issues will solve if we upgrade to piwik2.0? Has anyone did benchmark for high volume traffic?