lol Well it is fact that I don't agree with you. I use the iphone 8 constantly every day and there are times that there is a slight lag and a moment that it takes something to come up. I don't have many apps on my phone and it has lots of memory so nothing to encumber it. But it is fact for me, that it is not as you say. Anyway, this thread is about DX160.
I want to add that there are several people here who have iPhones and they are well liked and we test against various phones and other Android devices. We want the user experience to be free of stress and strive for that.
What makes an opinion different from a fact is the ability to verify and reproduce the latter.
You say you disagree with the fact that the iPhone 8 is faster than any DAP in the market, so you are implying that it’s not true.
Just be careful making these types of statements as PR, especially taking into account the number of third-party music players available in the App Store, capable of handling practically all formats without any hint of lag or late loading of covers and how to be easily evidenced in a speed test posted on YouTube, damaging your credibility.
Better to invest efforts in improving this type of aspects that are crucial to have a better user experience, even at the expense of slightly increasing the final price of your DAPs (at least 4 GB of RAM and a current Snapdragon SoC wouldn't hurt your finances, specially considering you’re a company that sell niche products in small volumes).