feat: faster loading if model already cached #853

Job	Run time
Run tests with pytest (ubuntu-latest, 3.13)	2m 17s
Run tests with pytest (ubuntu-latest, 3.12)	2m 16s
Run tests with pytest (ubuntu-latest, 3.11)	2m 42s
Run tests with pytest (ubuntu-latest, 3.10)	2m 16s
Run tests with pytest (ubuntu-latest, 3.9)	2m 12s
	11m 43s

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