I have seen virtually nothing in the tech press about significant issues with Version 1903, and none of the 5 systems I maintain for my household has had any issue whatsoever with it, and those have processors ranging between an Intel Pentium Dual Core and an AMD A12-9700P.
I keep trying to tell people that frequent venues such as Tom's Hardware that what we see here is in no way a representative sample of experiences. People do not turn to forums such as this one when everything goes just fine, they just continue merrily along. This is true of technical support forums of all varieties, not just computers. If you were to read your typical automotive support forum and believe what's posted on them is typical you'd believe that there has never been an automobile that functioned correctly and, if you didn't know they were already ubiquitous, would also believe "they'll never catch on."
You have to look at the broader picture, for anything, and in the case of Windows 10 Version 1903 the few issues there were were quite minimal and were resolved in the early days/weeks of the release. It's the polar opposite of what went on with Version 1809 (which, given the severity of its biggest issue, was an anomaly itself).