NZFF

The frame rate jumps between 4.5 and 30 when I fly in FSX. My computer is single core, 1.5 Ram, Nvidia 7300 video card and no dedicated memory. Is there anything I can reset so that the frame rate doesn't vary so much, without taking all the settings to minimum?

What is the CPU speed also what operating system are you using

sounds like a bit of good old fashioned throttling. i had the same prob with my old nvidia 7500 , i got a better card and all better. im not sure theres much you could do without buying/upgradiing stuff but you might try shutdown background or even foreground apps that are running apart from FS

make sure you have installed service packs 1 and 2, and with that hardware you'll need to turn down a few settings. Especially water, and autogen, keep them low, that should help. Especially make sure you don't use light bloom effect