refers to situations when too much data interferes with our ability to focus and be productive.

"Cognitive overload" seems to be the appropriate answer.

Explanation:

Cognitive overload seems to be a condition where even the instructor gives the educators quite enough knowledge and too many other assignments at the same time so that the trainee can not handle this knowledge. It usually happens when another quantity of comments or data provided outstrips the individual's personal capability to understand documentation.