# Opcua has high latency when subscribing to large amounts of data

**URL:** <https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953>\
**Category:** General\
**Tags:** opcua\
**Created:** [22 December 2023 11:32 UTC](https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953 "2023-12-22T11:32:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![xpxiong](https://avatars.discourse-cdn.com/v4/letter/x/258eb7/32.png) [@xpxiong](https://discourse.nodered.org/u/xpxiong)\
**Post date:** [22 December 2023 11:32 UTC](https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953/1 "2023-12-22T11:32:01Z")

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I subscribed to more than 400 data using the opcua-client node, but by the time the data returned, it had already occurred for more than ten seconds  
 ![时间延迟](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/1/a1237da6e79c1f099805985a8de86929d7320c96.png)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [20 February 2024 11:32 UTC](https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953/2 "2024-02-20T11:32:29Z")

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