Sensors not updating MQTT server at appropriate frequency

Hello,
I've recently migrated to the fork due to lots of errors clogging up the HA log. The fork has resolved those issues, but I've got one new annoying problem. My sensors are not updating at the defined frequency; worse, they're seemingly updating at a random frequency.
Looking at my MQTT server with MQTT Explorer, I see that the Agent is online, and updating that it is online every 30 seconds, reliably. The primary sensor in question is a "monitorpowerstate" that runs on the agent and should update every 3 seconds. If this was just a case where updates are only sent when status changes, that'd be fine, but it doesn't seem to be that way. Updates are still a seemingly random time period after actual status change.
Looking at the topic in MQTT Explorer, I see update frequencies ranging from 30 minutes to 1 second
Steps I have taken so far: I have restarted my PC running HASS Agent. I have restarted HomeAssistant. I have restarted my MQTT server. I have deleted and recreated the sensor.
Any suggestions on next steps would be appreciated.