Stepping without using class vtables #810

Job	Run time
tests (ubuntu-latest, tests)	33s
build (ubuntu-latest, noradio)	1m 54s
tests (macos-latest, tests)	29s
build (ubuntu-latest, wifi)	2m 25s
tests (windows-latest, tests_nosan)	1m 16s
build (ubuntu-latest, bt)	2m 5s
build (macos-latest, noradio)	1m 26s
build (macos-latest, wifi)	1m 42s
build (macos-latest, bt)	1m 35s
build (windows-latest, noradio)	4m 37s
build (windows-latest, wifi)	4m 39s
build (windows-latest, bt)	5m 33s
	28m 14s

Provide feedback