Version dependant slowing down of Gaussian Mixture sampling in Ubuntu 20.04

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I can confirm the logp_dlogp is about 10x slower in 5.9.1 than in 5.9.0, even with the “fix above”. And it’s definitely due to Allow batched parameters in MvNormal and MvStudentT distributions by ricardoV94 · Pull Request #6897 · pymc-devs/pymc · GitHub