This has been known for many years, but it is worth repeating: Radtel only cares about selling new radios with fancy marketing to attract those unaware. They continue to not learn any lessons. The RT-4D had several months of debugging and customer feedback before they announced the RT-6D and RT-6D Pro. You would expect the 6D series to be a better evolution of the 4D, right? Same CPU, but colour screen, more features, etc. The reality is that the 6D firmware is actually worse than the one in the 4D, the UI is very slow, so many things are half baked. Whatever they fix on the 4D doesn't always land on the 6D. They also are planning on releasing a RT-5D that has little ressemblance to either the 4D or 6D, and from early feedback from private testers, it's a significant regression to either 4D or 6D. Worse CPS, very little features, half are half baked, etc. The 4D had the benefit that I found a crap ton of bugs and documented them in details for Radtel to fix, and it still took them sometimes a year or more for them to fix only SOME of them. Not to mention that when I explained a critical problem in deep details, with screenshots, logs, etc they replied "ok. let me know when you have information" completely ignored what I previously said.
To read that the RT-1000 Pro has 3 VFOs but only one tuner is.... hahahahahahahahahahahahahahahahahahahahahahahahahaha. People need to stop beliving the hype and vote with their wallets. Reading about stuff not working properly is also no surprise, it is their modus operandi. It usualy takes 6 months or more for their firmware to fix many basic problems. Stuff like "APRS is dedicated to VFO C, but when I press PTT goes to the current VFO" is an old bug from at least 1 or 2 years ago that they never fixed on other radios.
Stop supporting a company that keeps half-baking everything they sell.