render_acf_blockcallback are cached. By default, WordPress Core object cache is not that useful so we recommend replacing it with something like Object Cache Pro -plugin that uses Redis.
air_acf_block_cache_lifetimefilter. For example, like this.
THEME_SETTINGSarray by adding a
'prevent_cache' => true,to the block registration.
air_acf_block_maybe_enable_cachefilter available to disable the caching for all blocks or per block.