I posted this update about 2 weeks ago. The situation hasn’t changed since then:
Firmware version 163 (the latest public release) does contain connectivity related fixes–they fixed a crash in the endpoint firmware. They sent it to me shortly prior to releasing it to confirm that a particular issue was fixed (it was).
I very much recommend running the latest firmware–it does make a difference.
We have spent a lot of time running down issues with Meridian streaming (even if it doesn’t seem that way, because a lot of it has happened offline in collaboration with our alpha testers, most of which are Meridian users, and not in public on this forum). Everything that we have been able to reproduce in-house has been either fixed on our end, or reported in detail to Meridian so they can address issues on their side.
One last thing: Build 29 of Roon contained no changes directly pertaining to Meridian streaming. Any behavior change that coincided with that build is likely to be environmental, or performance related.
I hope this gets worked out soon.