Looks like your new PC is chewing up FSX very nicely, looking good there.
As for the wide view variable, I always have it set to False even when using 1920x1080 (16:9) and now using 2560x1600 (16:10). I never noticed a performance hit but I never used it as I just don't like the view it gives. It just does not look right to me, I tend to run FSX mostly with external views and wideaspect is bad. All my screen shots now and in the past were taken with it off.
IMO leave it to false.
As for the wide view variable, I always have it set to False even when using 1920x1080 (16:9) and now using 2560x1600 (16:10). I never noticed a performance hit but I never used it as I just don't like the view it gives. It just does not look right to me, I tend to run FSX mostly with external views and wideaspect is bad. All my screen shots now and in the past were taken with it off.
IMO leave it to false.