I'm sure it depends on your workload, but I've been running object detection just fine off the igpu on my i5-8600. I think the key is to ensure the frame size isn't unnecessarily large for object detection.
Having played all 3, I think Clank Catacombs is the best iteration so far. The variable dungeon tiles really add to the "exploring" theme while improving the replay value. My group loves how you are really incentivized to push your luck on whether to take a known route back vs cutting a new path.
I'm sure it depends on your workload, but I've been running object detection just fine off the igpu on my i5-8600. I think the key is to ensure the frame size isn't unnecessarily large for object detection.