I currently have about 40 Matter devices across 2 Thread networks, mostly Nanoleaf bubs and Tado thermostats, intending ultimately to expand to around 60 devices of different types. I have had a lot of problems with stability with the Python server, with numerous timeouts and devices going offline. In particular, switching light groups (chandeliers, downlights etc) has been very unreliable, often resulting in the whole Thread network hanging for several minutes. The new matter.js beta server has improved stability dramatically. There are now almost no timeouts in the logs, and switching is reliable for small groups of lights. There are still issues with switching large groups, but I am working on a script to throttle these sorts of operations. Overall, a massive improvement though. Thank you!
One oddity I’ve noticed. There are numerous log entries looking like this, although they don’t seem to cause noticeable symptoms:
2026-01-24 06:12:28.640 INFO ClientSubs~onHandler Ignoring data report for unknown subscription ID 64a3059e
2026-01-24 06:12:33.918 INFO ClientSubs~onHandler Ignoring data report for unknown subscription ID 1b11b158
2026-01-24 06:12:34.819 INFO ClientSubs~onHandler Ignoring data report for unknown subscription ID 45090504
2026-01-24 06:12:43.819 INFO ClientSubs~onHandler Ignoring data report for unknown subscription ID 6d12a740
