--- title: "New on Amplitude: Faster Queries and Uploading Custom Cohorts" description: "Our talented engineers have spent the last month building a new internal system to handle dashboard queries, resulting in significantly faster dashboard performance speeds!" canonical: "https://amplitude.com/en-us/blog/faster-queries-uploading-custom-cohorts" --- # New on Amplitude: Faster Queries and Uploading Custom Cohorts Our talented engineers have spent the last month building a new internal system to handle dashboard queries, resulting in significantly faster dashboard performance speeds! Source: https://amplitude.com/en-us/blog/faster-queries-uploading-custom-cohorts --- [Alan Ibrahim](/blog/author/alan-ibrahim) [Former Director of Customer Success, Amplitude](/blog/author/alan-ibrahim) [](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Famplitude.com%2Fblog%2F%2Fblog%2Ffaster-queries-uploading-custom-cohorts)[](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Famplitude.com%2Fblog%2F%2Fblog%2Ffaster-queries-uploading-custom-cohorts)[](https://twitter.com/intent/tweet?url=https%3A%2F%2Famplitude.com%2Fblog%2F%2Fblog%2Ffaster-queries-uploading-custom-cohorts\&text=New%20on%20Amplitude%3A%20Faster%20Queries%20and%20Uploading%20Custom%20Cohorts)[](mailto:?subject=Checkout%20this%20Amplitude%20Article\&body=Check%20this%20out%3A%20https%3A%2F%2Famplitude.com%2Fblog%2F%2Fblog%2Ffaster-queries-uploading-custom-cohorts) Our talented engineers have spent the last month building a new internal system to handle dashboard queries, resulting in significantly faster dashboard performance speeds! In a nutshell, they’ve built a distributed query engine that splits up complex queries into chunks and runs the computations in parallel, resulting in faster dashboards for you. \*\*Almost all queries will now run in less than 10 seconds, \*\*with more complex queries (ie. involving multiple event property filters/group bys, or spanning several months of data) taking no more than 60 seconds. We’d love your feedback on this new system — if you experience queries taking longer than a minute, please let us know so we can investigate how to make them faster! ### Upload Custom Cohorts into Amplitude You can now **upload your own list of users** into the Cohorts Tab and then see that cohort as a segment on pages like Funnels and Retention. This allows you to construct a complex cohort in Redshift or your own internal system and then see those users in action in the dashboard. To use this feature, click on the “Upload Cohort” button on the Cohorts Tab and select the file you want to upload. You can upload a CSV or text file containing either a list of user\_ids or amplitude\_ids. ### Updated Conversion Window for Funnels We’ve made a slight change in the way we count funnel conversions. **Users will now only be counted as converted in a funnel if they have completed the actions in the funnel within 30 days of entering the funnel.** For example, if you create a funnel where the time series is from January 1 through January 2, users who enter the funnel on January 1 will have until January 30 to complete the remaining events in the funnel. Users who enter the funnel on January 2 will have until January 31. Our old system would give all users who entered the funnel 30 days from the last date in the time series to convert (so in the example above, all users would have until January 31 to convert). That wraps it up! As always, if you have any questions or feedback, you can find us at contact\@amplitude.com. About the author Alan Ibrahim Former Director of Customer Success, Amplitude [More from Alan](/blog/author/alan-ibrahim) Alan is Amplitude's former Director of Customer Success, where he lead our North American Success team. As Amplitude's first employee, he built out our Customer Success function from scratch! [More from Alan](/blog/author/alan-ibrahim) Topics #### Recommended Reading [Read ](/blog/lessons-from-consolidating-our-mcp-server) [Insights](/blog/lessons-from-consolidating-our-mcp-server) ###### [Lessons from consolidating our MCP server](/blog/lessons-from-consolidating-our-mcp-server) [Oct 6, 2026](/blog/lessons-from-consolidating-our-mcp-server) [10 min read](/blog/lessons-from-consolidating-our-mcp-server) [Read ](/blog/what-ai-engineers-do) [Insights](/blog/what-ai-engineers-do) ###### [What AI engineers do in the age of agentic code](/blog/what-ai-engineers-do) [Oct 1, 2026](/blog/what-ai-engineers-do) [14 min read](/blog/what-ai-engineers-do) [Read ](/blog/jev-analysis) [Insights](/blog/jev-analysis) ###### [An analysis of Jev: Faster and cheaper, but watch the accuracy](/blog/jev-analysis) [Sep 28, 2026](/blog/jev-analysis) [13 min read](/blog/jev-analysis) [Read ](/blog/ai-context-configuration) [Product](/blog/ai-context-configuration) ###### [Your agent isn’t broken. It’s guessing.](/blog/ai-context-configuration) [Sep 23, 2026](/blog/ai-context-configuration) [6 min read](/blog/ai-context-configuration) #### Explore Related Content [101](/compare/top-feature-flag-solutions-for-product-teams) ###### [9 Top Feature Flag Solutions for Modern Product Teams in 2026](/compare/top-feature-flag-solutions-for-product-teams) [Jan 27, 2026](/compare/top-feature-flag-solutions-for-product-teams) [Integration](/blog/amplitude-hubspot-behavioral-analytics) ###### [Using behavioral analytics for growth with the Amplitude app on HubSpot](/blog/amplitude-hubspot-behavioral-analytics) [Jun 17, 2024](/blog/amplitude-hubspot-behavioral-analytics) [10 min read](/blog/amplitude-hubspot-behavioral-analytics) [Personalization](/blog/identity-resolution-insights) ###### [Identity resolution: The secret to a 360-degree customer view](/blog/identity-resolution-insights) [Feb 16, 2024](/blog/identity-resolution-insights) [10 min read](/blog/identity-resolution-insights) [Product](/blog/warehouse-native-technical-deep-dive) ###### [Inside warehouse-native Amplitude: A technical deep dive](/blog/warehouse-native-technical-deep-dive) [Jun 27, 2023](/blog/warehouse-native-technical-deep-dive) [15 min read](/blog/warehouse-native-technical-deep-dive) [Guide](/resources/boost-customer-engagement) ###### [5 Proven Strategies to Boost Customer Engagement](/resources/boost-customer-engagement) [Jul 12, 2023](/resources/boost-customer-engagement) [Video](/designing-high-impact-experiments) ###### [Designing High-Impact Experiments](/designing-high-impact-experiments) [May 13, 2024](/designing-high-impact-experiments) [Startup](/blog/direct-to-consumer-marketing-tactics) ###### [9 direct-to-consumer marketing tactics to accelerate ecommerce growth](/blog/direct-to-consumer-marketing-tactics) [Feb 20, 2024](/blog/direct-to-consumer-marketing-tactics) [10 min read](/blog/direct-to-consumer-marketing-tactics) [Growth](/blog/analytics-product-market-fit) ###### [Leveraging analytics to achieve product-market fit](/blog/analytics-product-market-fit) [Jul 20, 2023](/blog/analytics-product-market-fit) [10 min read](/blog/analytics-product-market-fit)