flakeyness from over 100 blocks

[nachog00]

is this fixed? @dorianvp @zancas

This issue and the linked PR mostly describe the weird behavior around the NFS. My understanding is that a workaround was implemented in #638... We can either rename this issue to refer to that more explicitly, or mark this as completed and open another one targeting the core issue.

Originally posted by @dorianvp in #620