feat: Improve Flatbuffers Data Format Performance (#3989) #5879

Job	Run time
manylinux.amd64.py3.6.build	4m 28s
manylinux.aarch64.py3.7.build	42m 11s
ubuntu-latest.amd64.py3.8.sdist-bundle	59s
manylinux.amd64.py3.7.build	4m 4s
manylinux.aarch64.py3.8.build	43m 19s
macos.amd64.py3.6.build	9m 1s
manylinux.amd64.py3.8.build	4m 6s
manylinux.aarch64.py3.9.build	49m 18s
macos.amd64.py3.7.build	9m 45s
manylinux.amd64.py3.9.build	4m 27s
manylinux.aarch64.py3.10.build	41m 59s
macos.amd64.py3.8.build	9m 11s
manylinux.amd64.py3.10.build	4m 28s
macos.amd64.py3.9.build	9m 10s
windows-2019.amd64.py3.6.build	14m 30s
windows-2019.amd64.py3.7.build	15m 38s
macos.amd64.py3.10.build	8m 52s
windows-2019.amd64.py3.8.build	15m 42s
windows-2019.amd64.py3.9.build	16m 57s
windows-2019.amd64.py3.10.build	18m 16s
ubuntu-latest.amd64.py3.8.sdist-build-test	5m 40s
manylinux.amd64.py3.6.test	3m 27s
manylinux.amd64.py3.7.test	3m 17s
manylinux.amd64.py3.8.test	2m 32s
manylinux.amd64.py3.9.test	2m 41s
manylinux.amd64.py3.10.test	2m 21s
macos.amd64.py3.6.test	4m 59s
macos.amd64.py3.7.test	4m 50s
macos.amd64.py3.8.test	11m 37s
macos.amd64.py3.9.test	12m 40s
macos.amd64.py3.10.test	12m 52s
windows-2019.amd64.py3.6.test	7m 39s
windows-2019.amd64.py3.7.test	6m 50s
windows-2019.amd64.py3.8.test	6m 28s
windows-2019.amd64.py3.9.test	6m 47s
windows-2019.amd64.py3.10.test	7m 3s
manylinux.aarch64.py3.7.test	13m 28s
manylinux.aarch64.py3.8.test	14m 15s
manylinux.aarch64.py3.9.test	14m 46s
manylinux.aarch64.py3.10.test	14m 21s
	8h 4m 54s

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