Tested today for another run after the update
I would say that random spikes are mostly gone, but now it’s slower then before to adapt to changes. Today I still got a random initial spike that solved by itself after the first km.
In general it seems to be something like 5bpm higher that the previous one, at low intensity, but I don’t have an HR belt so I cannot say which one is more precise.
I’ll say a general improvement overall, but way from perfect