Can you describe your lab and the hardware you are using.
Likely meant the underlaying datastore raid level to 0. Storage latency has a huge impact in nested labs, closely followed up memory and cpu resources.
Shashank Mohan
VCIX-NV 2022 | VCP-DCV2019 | CCNP Specialist
https://lab2prod.com.au
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Author of NSX-T Logical Routing: https://link.springer.com/book/10.1007/978-1-4842-7458-3