Hey Coach Pinguno,
There is a limit to the Item Spawner device, haven’t tested in a few months, but from past experience they start to malfunction when using 80 - 100 of them.
Using some other devices will decrease its reliability, like item granters and placers.
It may help to not have them all spawn at once and use some sort of time delay to break it up or a volume to detect player proximity to spawn them with.