Scalar field improvements #1547

Job	Run time
Ubuntu GCC SCALAR_DOUBLE=OFF	51s
Ubuntu GCC SCALAR_DOUBLE=OFF	44s
Ubuntu GCC SCALAR_DOUBLE=OFF	44s
Windows MSVC SCALAR_DOUBLE=OFF	4m 5s
Windows MSVC SCALAR_DOUBLE=OFF	5m 54s
Windows MSVC SCALAR_DOUBLE=OFF	5m 54s
Ubuntu Clang SCALAR_DOUBLE=OFF	41s
Ubuntu Clang SCALAR_DOUBLE=OFF	46s
Ubuntu Clang SCALAR_DOUBLE=OFF	46s
macOS Clang SCALAR_DOUBLE=OFF	4m 24s
macOS Clang SCALAR_DOUBLE=OFF	3m 32s
macOS Clang SCALAR_DOUBLE=OFF	3m 42s
Ubuntu GCC SCALAR_DOUBLE=ON	48s
Ubuntu GCC SCALAR_DOUBLE=ON	46s
Ubuntu GCC SCALAR_DOUBLE=ON	46s
Windows MSVC SCALAR_DOUBLE=ON	5m 27s
Windows MSVC SCALAR_DOUBLE=ON	5m 32s
Windows MSVC SCALAR_DOUBLE=ON	5m 32s
Ubuntu Clang SCALAR_DOUBLE=ON	1m 21s
Ubuntu Clang SCALAR_DOUBLE=ON	1m 9s
Ubuntu Clang SCALAR_DOUBLE=ON	1m 9s
macOS Clang SCALAR_DOUBLE=ON	3m 42s
macOS Clang SCALAR_DOUBLE=ON	3m 40s
macOS Clang SCALAR_DOUBLE=ON	4m 25s
	1h 6m 20s

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