Official Resource Clamp?

Hi,

Anyone know what the official resource clamp is? I'm going to be breeding gathering dinos and I don't want to waste points in melee when the gain is minimal. If you have a source for your information please include it. I Googled it and searched around a bit but couldn't find any concrete information on the subject.
For those that don't know, a resource clamp is a sort of cap on the number of resources you can gain from a node. IE even with 10,000% melee your dino can only gain x number of metal from one node.

Please help.

I didn't find the right solution from the Internet.

References
survivetheark.com/index.php?/forums/topic/318636-official-resource-clamp/
Landing Page Video

Thanks