Usually i decide to get clusters when i want to craft smth and see that i haven't enough of them to do it. This means that i need to gather 1 or 2 types of clusters +15 of each is enough in most cases. So, i swithch to min/btn (depends on daytime) and jump to mordhona. After jump i already have ~500 gp and more than 550 when i reach it if it is already avail. If I need 2 nodes - gp has enough time to regenerate between two gathers.