PostNL plugin performance not great

  • Wordpress dashboard was extremely slow, page loading times going up to 20 seconds. We found out it was the PostNL plugin, using WP Query Monitor. With over a thousand queries to wc_shipping_zones.

    With PostNL activated:
    Page Generation Time: 16.4940s

    Peak Memory Usage
    115,210,984 bytes (109.9 MB)
    21.5% of 512 MB WordPress limit

    Database Queries
    0.7499s

    SELECT: 2,077
    SHOW: 5
    INSERT: 3
    UPDATE: 8
    Total: 2,093

    Without PostNL:
    Page Generation Time: 2.4517s

    Peak Memory Usage
    75,708,960 bytes (72.2 MB)
    14.1% of 512 MB WordPress limit

    Database Queries
    0.1671s

    SELECT: 121
    SHOW: 9
    INSERT: 5
    UPDATE: 3
    Total: 138`

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