LRCC2 works for BH with tightened thresholds #2048

Job	Run time
macos-latest: clang++ Release Threads	13m 14s
macos-latest: clang++ Release OneTBB	1m 8s
macos-latest: clang++ Release PaRSEC	1m 37s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	36m 32s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	1m 59s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	2m 10s
macos-latest: clang++ Debug Threads	19m 44s
macos-latest: clang++ Debug OneTBB	1m 21s
macos-latest: clang++ Debug PaRSEC	1m 33s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	48m 40s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	1m 38s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	1m 57s
	2h 11m 33s

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