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FAQ · 11 answers
Missing data, slow reports, differing costs and data sources that won't connect: answers for everyone who analyses their marketing in Looker Studio.
Looker Studio shows different numbers than GA4 due to different metrics or dates, cached data, explorations, sampling or thresholds. How to compare correctly.
02Looker Studio has no general 10,000-row limit. A cut-off at 10,000 rows comes from the chart's row setting, a connector or the data source.
03Google Ads and GA4 data fit in one Data Studio report via a blend or a linked GA4 source. Why joins fail and how to build them on date and campaign.
04Looker Studio charts show old figures because data is served from memory until the data freshness interval expires, 12 hours for Google Analytics by default.
05Missing data in Looker Studio for recent days? GA4 needs 24–48 hours to process, and Google sources refresh every 12 hours. How to find the cause.
06A year-on-year comparison in Looker Studio usually fails because the previous year holds no data: Search Console keeps only 16 months of history.
07Google Ads costs in Looker Studio differ from the Ads dashboard because of date range, time zone, currency, filters or accounts – rarely the cost data.
08Slow Looker Studio reports usually come from large or blended data sources, too many charts per page and complex calculated fields. Extracts help.
09Landing Page exists only in the URL Impression table of the Search Console connector. Add a second data source with URL Impression and filter that.
10“Data source not available” in Looker Studio: the recipient may see the report but not the data source. Fix it with owner’s credentials or source access.
11Custom metrics in Looker Studio fail when formulas mix aggregated and raw fields, use wrong data types, contain syntax errors or divide by zero.
A good dashboard shows at a glance what marketing delivers. In practice it often fails on details: permissions, time zones, data sources with different freshness or fields that can't be combined.
The answers explain why figures in Looker Studio can differ from Google Ads or Search Console, how to reduce loading times and how to build reports that are still correct three months from now.

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