Maybe such topic exists, but my forum search don't yield desired results. In such case, please point me to relevant thread, if appropriate. So, I use both GetComponentGroup (without Inject) in IJob (for single threading) and expect working as well IJobParallelFor; and I use IJobProcessComponent / IJobProcessComponentWithEntity. For either job type and relevant system application, they work great accordingly. But can anyone briefly refresh my knowledge, reading GetComponentGroup? If I use it for IJobParallelFor vs instead IJobProcessComponent, (when either case works), is still more preferable to use IJobProcessComponent? Last seams more clean. But in fact, I haven't tested, if GetComponentGroup works with IJobProcessComponent? Can anyone confirm please? Thx.