Improve error model, callbacks #820

Job	Run time
samples (Debug, ubuntu-24.04)	2m 35s
samples (Release, ubuntu-24.04)	3m 23s
samples (Debug, windows-2019)	2m 14s
samples (Release, windows-2019)	8m 9s
samples (Debug, macos-latest)	1m 33s
samples (Release, macos-latest)	1m 55s
	19m 49s

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