A little looser #1497

Job	Run time
macos-latest: clang++ Release Threads	8m 54s
macos-latest: clang++ Release OneTBB	2m 28s
macos-latest: clang++ Release PaRSEC	3m 51s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	31m 27s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	1m 42s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	3m 48s
macos-latest: clang++ Debug Threads	13m 2s
macos-latest: clang++ Debug OneTBB	4m 9s
macos-latest: clang++ Debug PaRSEC	3m 5s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	31m 15s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	1m 52s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	2m 42s
	1h 48m 15s

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