@shez1983 I'm using the RefreshDatabase trait so it resets the database after each test.

I can also confirm that running the tests does cause a spike in CPU usage (over 100%), but RAM is not affected. This is however for all three versions (7.0, 7.1, and 7.2) so it doesn't appear to make a difference. PHP7.0 is still approx 3x as fast with the current tests that I have.

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