Sorry, but I think we have misunderstand here @Peter.
Syncing data from beginning is slow because by the time, we have a lot of data to process and write. Specially, fullnode need to write data for all shards and beacon, so it’s slower than validator node(only sync shard and beacon). If we still use db version 1 for this, it may faster than db ver.2(but a little bit, not much, it still take > 24h ). But we consider that db ver.1 with > 180Gb of disk is not a best choice for economy right?
By the way, @hungngo also make profiling to find out the way which we can use to optimize this, and maybe we will need to spend a lot of time to do that(3 - 4 weeks)