Some important things to keep in mind while performing bulk actions in Infoplus:
Avoid the busiest times of the day, if possible
Abide by guidelines regarding size of batches: https://www.infopluscommerce.com/knowledge-base/bulk-load
Try not to have multiple jobs running consecutively.
If you will be repeatedly making the same type of imports (orders, ASNs, etc.), create and use a bulk load profile to save time on setting up mapping of data.
These best practices may seem like they will make your jobs take longer, but they will actually assist in getting your records loaded/edited faster. Infoplus developers have lots of plans to make this functionality even faster in the future!