I, too, experienced a very short relationship with 11.50. After an initial first flight with many of the happy discoveries mentioned above, it shut down with a black screen a couple of times, then would not load at all. No matter which aircraft I chose to fly, it would go through the processes of pre-loading, then crash to black screen. I went to 'help' and received a message which read: "This was not our best day...". I rolled back to my previous version with no glitches and it's been fine since.
I do love flightsiming, and doing it correctly (as a private pilot) by spending the time to plan my route, note the ATIS, VOR & NDB frequencies needed, air space restrictions, etc,--even though most flights will be on auto pilot/GPS --as we were instructed, we should prepare for the day when the GPS and/or the G1000 screens fail. I have double-24" display setup driven by an MSI GTX1660Ti GPU with 6 gigs mem/ASUS Pro Gaming mobo/32 gigs ram / Intel i5-6600K CPU. This is enough to provide a rewarding flight sim experience without breaking the bank. I have a weakness for any new model that comes from Aerobask, Carenado, or many others, and enjoy the exercise of studying the manuals and learning the startup procedures & V-speeds for each one.
This being said, I have one major complaint regarding flightsiming: I'm spending far too much time getting X-plane and the various plugin addons to work properly. The glitches with Navigraph, Goodway, xEnviro, etc, always need attention and I'm wasting flying time getting them solved. I have far too much money involved in X-plane to switch to Microsoft or some others at this point and this is a quandry. Here's an example: I bought a VKB stick from X-plane.org 2 years ago. The left side hat switch button (trim) failed within the first year of a 2-year-warranty. I wrote to 'sales' and asked for help to either get a replacement part or a new stick. I was told that I "had already received a new stick and the warranty had therefore been honored". I replied that I had never before made such a request and asked for the paperwork to 'prove' it. No reply. With no help there I looked everywhere on line for the simple plugin 'chip' that's inside the thumb switch housing...nothing. I went directly to VKB for help...nothing. So, I'm stuck with a $100 stick that works fine otherwise, but I've had to 'work-around' by dedicating keyboard keys for up/dwn trim. This is not what I paid for. Anyone else had similar issues?