When we have max_bundle_timeout="30" and max_bundle_size="64000", then we will always run into the timeout when sending (for example) synchronous 1000 byte messages. Investigate whether it makes sense to keep track of (1) when the timeout and/or (2) the max bundle size is exceeded and adjust the max_bundle_timeout / max_bundle_size accordingly.
E.g. if the max_timeout is always reached because we're only sending 1000 byte messages, set the max_bundle_size to 1000