Having read other topics and flooring faqs in internet it seems that this sort of problems is normally caused by the sub floor not being flat or floor expansion.
Laminate floor flexes when walked on.
Avoid cheap laminate flooring.
Ideal situation is when you can check your sub floor quality before laminate flooring purchase and then make adequate decision.
It may look real but it s still a synthetic that feels unnaturally hard and can be harsh sounding when walked on.
The wear layer of laminate floor contains plastic that doesn t degrade in landfills.
Your weight stresses the interlocking tongues and grooves in the flooring causing.
Laminate flooring brings good looks at a less intimidating price point than high end solid wood.
Can laminate flooring be installed on floor that flexes when you walk.
Some laminate even mimics.
Neither former nor latter applies as this is a new installation week old and the sub floor seems to be flat enough.