I had 1600 sq feet installed on wood subfloor, plywood in wet areas and osb elsewhere. Great product overall very happy. As to the creeking and popping yes I have some of that but its a tradeoff for how rigid this stuff is and as a result it is almost impossible to scratch. I did weeks of research! I ordered dozens of samples and this one is the real deal for scratch resistance, its bulletproof! Because it is so rigid it requires an absolute flat surface to avoid creaks/pops. You cannot assume your floor is flat, every square ft must be checked and floated as needed using professional grade straight edges at least 8 feet long. I did that in most areas of my space and those areas are sound, not creaks or pops. the areas I did not is where I have that issue but the trade off is worth it to me for the durability. it seems to get better over time.
Q
