The CPU usage isn't even half of the max most of the time. What I notice is the network traffic is idling and then there are bursts for some minutes and then goes back. That's why I'm wondering if there times when it is better to sync with more node bandwidth available?
Discussion
No, there are no such thing as better time to sync.
May I know what monerod arguments did you use?
Pruned block chain and 1024 for peers out.
Try this:
```
p2p-use-ipv6=true
prune-blockchain=1
sync-pruned-blocks=1
in-peers=1024
out-peers=1024
```
Depending on how you are running the monerod, you will need to raise LimitNOFILE / ulimit -n, the safe value for the config snippet above is 4096