Subtape + Fix Recursion #592

Job	Run time
test (1.7, ubuntu-latest, x64)	48s
test (1.7, ubuntu-latest, x86)	1m 0s
test (1.7, windows-latest, x64)	1m 18s
test (1.7, windows-latest, x86)	1m 27s
test (1.7, macOS-latest, x64)	1m 54s
test (1, ubuntu-latest, x64)	51s
test (1, ubuntu-latest, x86)	1m 8s
test (1, windows-latest, x64)	1m 21s
test (1, windows-latest, x86)	1m 44s
test (1, macOS-latest, x64)	1m 29s
test (nightly, ubuntu-latest, x64)	1m 16s
test (nightly, ubuntu-latest, x86)	1m 48s
test (nightly, windows-latest, x64)	1m 43s
test (nightly, windows-latest, x86)	2m 23s
test (nightly, macOS-latest, x64)	1m 54s
	22m 4s

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