Performance and Best Practices

Last updated: February 18, 2026

1. Loader Placement

place CMP loader as early as required for consent default timing

avoid injecting loader multiple times across templates

use async/defer only when it does not break consent ordering requirements

test ordering with Tag Assistant and browser timeline

document cache TTL for CMP assets and config

purge cache after policy-critical updates

running multiple CMPs simultaneously

firing analytics tags before consent defaults

conflicting GTM templates writing consent state

initialize CMP once

avoid repeated initialization across screens

expose clear consent reopen entry point