🚨 Fix compiler warnings and more consistency #1873

Job	Run time
macos-11 with g++-11 (Debug mode)	20m 52s
macos-11 with g++-11 (Release mode)	31m 27s
macos-11 with g++-12 (Debug mode)	26m 4s
macos-11 with g++-12 (Release mode)	28m 24s
macos-11 with clang++ (Debug mode)	17m 16s
macos-11 with clang++ (Release mode)	29m 23s
macos-12 with g++-11 (Debug mode)	18m 20s
macos-12 with g++-11 (Release mode)	22m 33s
macos-12 with g++-12 (Debug mode)	18m 33s
macos-12 with g++-12 (Release mode)	24m 49s
macos-12 with clang++ (Debug mode)	13m 7s
macos-12 with clang++ (Release mode)	21m 20s
macos-11 with g++-10 (Debug mode)	22m 29s
macos-11 with g++-10 (Release mode)	21m 59s
	5h 16m 36s

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