NDI signal breakup in Zoom Rooms

We’ve been using NDI with Zoom Rooms into a Tricaster successfully for some time now. Great quality. After the last Zoom Rooms update, though, I have noticed the occasional signal breakup (green horizontal bolts) on one or two random output channels. Usually, it happens during events with more than two participants, though not always. The breakup interestingly never affects the share screen output and the breakup doesn’t show on the Zoom Room screen. The quick fix has been to change the output “channel” to another NDI output. That, however, isn’t always the final solution. In time, that channel breaks up too and we switch to yet another NDI output. The Zoom Rooms box is a core i9 and the network is not stressed. I changed the Cat6 cable and no change. I am able to get NDI output using another app (VideoCom) without issue. Anyone else seen this or have ideas?