Speeding up MQTT Messages

Hello Particle Friends,

with my Particle Electron I’m trying to build an application for real time car telemetry by using the MQTT protocol.
In the Libary Search I’ve found the MQTT Libary (0.4.6) which works well with my broker, but I was expecting it to be faster. Much faster.

Right now my loop() method contains of one MQTT pusblish and the MQTT Client loop() call. In this scenario I’m only able to send ~4 messages per second.

Is this normal, or am I doing something wrong?

void setup() {
client.connect("fstelemetry", "FST/session/running", MQTT::QOS0, true, "stopped");


void loop() {
client.publish(“FST/speedTest”, “Hi”, MQTT::QOS0, 123);