Google Analytics Event Tracking - Minimal Interval between the events

Question

I want to track multiple events using GA _trackEvent method across multiple domains.

Because of the nature of the report I want to generate, I must do s

Answer 1

This is probably due to the 1 event per second limit

"Events Per Session Limit

In addition to general collection limits and quotas, the following limit applies to event tracking in ga.js:

The first 10 event hits sent to Google Analytics are tracked immediately, thereafter tracking is rate limited to one event hit per second. As the number of events in a session approaches the collection limit, additional events might not be tracked. For this reason, you should:

avoid scripting a video to send an event for every second played and other highly repetitive event triggers avoid excessive mouse movement tracking avoid time-lapse mechanisms that generate high event counts

(from https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide)

That is why your 2 seconds delay works. You can theoretically cut that in half, though a factor of safety would probably reduce that cut.