It's rather the fact, that they promise better performance in Play 6, than in Play 5. Until version 5, Play was always a buggy POC. It got better in the meanwhile, but in terms of performance, it is still not on par with Kontakt. And maybe never will. But promissing performance improvements makes it sound, like we use a crippled shareware version of a program, that we need to unlock for the full features.