Connecting to Venus Os via mDNS results in thousands of deltas/second

[zyxit2]

I've got my Signal K server connected to remote Venus device using signalk-venus-plugin. In the connection settings I've specified address as venus.local (an mDNS name) instead of an IP addresses. The server is able to make connection and read Venus data but the number of deltas per second just keeps growing to thousands and eventually freezes the system. When connected using IP address the deltas/second howers around 50-60.

I'm running Signal K Server v 1.30.0 on RPi 4 with 2GB ram, node version 14.4.0, OS is Raspbian Lite 4.19.118.
Plugin is configured to poll Venus every 2 seconds, but I have tried 10,20,30 seconds and it didn't make any difference in the behaviour. mDNS daemon is avahi v0.7

I've switched to IP address connection string for now but it would be really nice to use zero-conf/mDNS