Fast-catchup don't complete

TestNet
2

Usual issues are:

  1. You are using a HDD or a slow SSD. You now need a fast SATA SSD or an NVMe SSD.
  2. You don’t have enough RAM: you need at least 4GB.
  3. You have some DNS issues (when this happens, the round will always stay at 0).
  4. You don’t have the latest version of the sandbox

Please follow instructions of Fast Catchup not working in Sandbox on Windows (Mainnet) - #2 by fabrice after checking the above.