Normal inserters have problems picking up items from:

-Fast belts, especially if not full.

-Inner corner off a bent as it has a smaller surface to pick from ergo less time to.

So you can:

-Use faster inserters.

-Use slower belts.

-Ensure that the belts are full.

Normal inserters have problems picking up items from:

• Fast belts, especially if not full.
• Inner corner off a bent as it has a smaller surface to pick from ergo less time to.

So you can:

• Use faster inserters.
• Use slower belts.
• Ensure that the belts are full.