The solid state system gets longer with colder temps, is that what you are experiencing? Mine cycles about 10 - 15 seconds in the summer, everytime, hot engine, cold engine, doesn't matter. In the winter, I have seen as long a 1+ minute of cycle time, scares me, but I assume the system knows what it is doing! With that in mind, I have great starts, as you said, just long cycle times. When it was like -10 a week or so ago, I went out and started all the vehicles, including my 87 which was not plugged in, even though it was that cold, I was sweating cause that light seemed to stay on FOREVER!!! After hearing no longer than 10 seconds on a push button, I was real worried, but it fired right off, just like always.
I would say that is just normal at 22 degrees, it sure seems so with mine.