Some truncation statments for Chi and PQ before assembling alpha #1489

Job	Run time
macos-latest: clang++ Release Threads	11m 20s
macos-latest: clang++ Release OneTBB	3m 5s
macos-latest: clang++ Release PaRSEC	2m 37s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	26m 15s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	1m 51s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	2m 43s
macos-latest: clang++ Debug Threads	15m 14s
macos-latest: clang++ Debug OneTBB	4m 25s
macos-latest: clang++ Debug PaRSEC	3m 11s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	26m 43s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	1m 23s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	3m 21s
	1h 42m 8s

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