I meant to reply to people but it has gotten overly late, so tomorrow.

But I think the key issue is that while I understand relic weapons are generally meant to be time-consuming, the 3 x 20 memory step is particularly time-consuming in a way that can't be easily overlapped with time spent on other tasks, combined with the fact that the overall process of collecting the various stages benefits greatly from having a relic underway at each stage of the process.

To be fully efficient with the later steps you need to get at least four relics underway, and all of them need that first hurdle of dedicated time collecting memories.

I tried farming from single enemies tonight after people suggested it here, but there wasn't a party available to join and the drop rate doing it solo seemed worse than from skirmishes.