Not much interest in this thread. Guess it's too obvious to most people. Still seems to me it isn't a good idea to do too much monitor resolution switching, but I'll research that more elsewhere.
At any rate, Aces High bulletin board was slow to load and show after I switched to 1280x1024 flying while keeping my overall resolution at 1024x768.
So I switched back to 1024x768 for flying and bulletin board and all is smooth again.
However, I still fly FS2004 in 1280x1024 and naturally enjoy the prettier graphics.
Thanks for your input, Davenrino. I once increased my font size but found it was screwing up scrolling and presentation in some programs. Always a compatibility issue somewhere, I suppose.