Andrew it’s great your screen is perfect. Mine wasn’t as posted in the other topic. NEC wasn’t a me to resolve the issue and said it’s good enough. This was unacceptable for me as a delta of over 1 in average isn’t good at all.
There seems to be quite a few issues with the PA271Q.
However, in the end I sold the PA271Q, bought an Eizo, which calibrates perfectly for my second working space and now bough the new 4K screen which is also amazing.