# 5 additional checks in Tableau Workbook Optimiser -  New in Tableau 2022.2

> This is content from just-tim, the data-and-analytics channel by Tim Ngwena (formerly 'Tableau Tim'). Tim has 12+ years of hands-on BI experience and covers Tableau most of all, plus Power BI, Looker, Hex, SQL and data modelling, the analytics industry, and the craft of doing the job — always tool-agnostic and honest about the trade-offs.

- **Author:** Tim Ngwena (just-tim, https://just-tim.com/about)
- **Published:** 2022-07-04
- **Format:** Video · 6 min watch · transcript available
- **Topics:** Data visualisation, Tool strategy
- **Tools:** Tableau (cloud, performance, server, workbook optimizer)
- **Canonical:** https://just-tim.com/posts/5-additional-checks-in-tableau-workbook-optimiser-new-in-tableau-2022-2
- **Watch:** https://www.youtube.com/watch?v=Z8ZYJwhml3U

I walk through the five new tests added to Tableau's Workbook Optimizer in version 2022.2, comparing the checks against the previous 2022.1 release. I explain what each new check does and why it matters for workbook performance, covering date calculations, data blending, fixed dashboard size, live connections and groupings.

## Key takeaways

- Tableau 2022.2 expands the Workbook Optimizer from 12 to 17 tests, adding five new performance checks
- Minimise date calculations and conversions in Tableau, use DATEPARSE and built-in functions like DATEDIFF, and prefer relative date filters over discrete ones
- Set a fixed dashboard size so Tableau Server or Cloud can cache the rendered workbook rather than re-rendering it for every screen size
- Replace live data connections with extracts where possible, as extracts are almost always the more performant data source
- Reduce data blending in favour of relationships, and use a calculated field with a CASE statement instead of native grouping for better performance

## Chapters

- 0:00 Workbook Optimizer overview and version comparison
- 1:01 New date calculations check
- 2:22 Locating the four remaining new tests
- 3:17 Data blending check
- 3:44 Dashboard size not fixed check
- 4:45 Live data connection check
- 5:21 Users groupings check

Watch the full video, read the transcript and use chapter deep-links on the page: https://just-tim.com/posts/5-additional-checks-in-tableau-workbook-optimiser-new-in-tableau-2022-2

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just-tim — Data and analytics, with a point of view. · https://www.youtube.com/channel/UC7HYxRWmaNlJux-X7rNLZyw · https://twitter.com/TableauTim · https://www.linkedin.com/in/timngwena