No reason why not, As CaptB said just start with all "Bells & Whistles" turned off (Shaders, AI, 3D clouds, precipitation etc) keep the LODs low, increase them slowly a notch at a time, watching your frame rate, any dramatic drops return to the original setting on the one you altered! Be aware of "memory hungry" planes such as the Boeing 777, I fly this on my specs, see my signature for these, with most shaders (except for water, 3D clouds, particles and smoke,precipitation and model) turned off. I can only average 17 FPS on this plane, but it doesn't make it un-flyable. But please don't expect blistering frame rates on your specs as when I'm flying the 777 my laptop uses anything from 1.8 Gb to 5Gb of my RAM! It's worth downloading and running game fire
https://www.smartpcutilities.com/gamefire.html (other software is available) to turn off all surplas windows components that are not needed during the use of F/G I use this and it will release up to 500Mb of RAM to help speed up the frame rates! Also I use a 8Gb USB stick that is set as "Ready Boost" this helps take the pressure off the RAM as well. Hope this helps?