Hi everybody, question about frame rates I have fps set at 18 in ms fsx and have noticed using AtiTools the fps in windows mode matches ok ie 18 in fsx and 18 in atitools, however when I switch to full screen mode the fps is doubled and atitools reports a value of 36.(18 in fsx and 36 in atitools)has anybody come across this and is thier a logical answer for it. Bob os xp pro 4gb ram, ati hd2400xt 256fsx sp2

Not sure, but it sounds like youre using vsync. I'd recommend not using vsync.

Not sure, but it sounds like youre using vsync. I'd recommend not using vsync.

Thanks for replying, turned of vsync in CCC and in cfg file, still showing the same FPS in full sreen mode ie twice the fps as in widows mode. very strange

Thanks for replying, turned of vsync in CCC and in cfg file, still showing the same FPS in full sreen mode ie twice the fps as in widows mode. very strange

Hello onebob:Not so strange as one might think.Your question is a good one, and has been discussed often in the past. Look here:http://forum.avsim.net/topic/284374-why-does-fsx-run-slower-in-windowed-mode/page__p__1764814__hl__w6kd__fromsearch__1#entry1764814Scroll down to the 6th reply by "w6kd", Colonel Bob Scott. Your answer is there.Try a search for "windowed" or "full screen" in this forum. Weeks worth of reading!

Thanks for replying, turned of vsync in CCC and in cfg file, still showing the same FPS in full sreen mode ie twice the fps as in widows mode. very strange

..and turn Vsync back on, if you see any tearing in the scenery!