For self-hosted, if you are doing into the tens of thousands of pageviews per day you may want to turn off real-time and switch to auto-archiving which pregens

For self-hosted, if you are doing into the tens of thousands of pageviews per day you may want to turn off real-time and switch to auto-archiving which pregens reports. That level of traffic depends a lot though on the report period you are running against and how big you've provisioned your MySQL server. YMMV and I haven't benchmarked at multiple traffic levels.