Hello it is very difficult to find the possible locations where the problem occurs, my intuition after examining all the points of the stack, is that the problem is related to "FMX.Media" some synchronization not working properly, I get several errors after a few minutes of testing.
Particularly the line reported by @fm did not occur here in my tests, I tested this project's compile on another computer and got different errors on Win10.
Any suggestions how I can report this to embarcadero?
Thank you all.