As your system showed signs of performance related issues in FSX outside of UTX areas, this really is something outside of what additional features UTX offers and looks like. I'll try to cover a few general performance items and point at links to follow later in this posting but first comments on the latest screenshots.
- Again not knowing where the screenshots are taken I cannot compare them to what I might see (please press SHIFT+Z in FSX to show the co-ordinates). The first one shows what are scenery objects from Kennedy Space Center but that is definitely not the area around Cape Canaveral or Merritt Island in Florida. If I was to guess I'd say it is some other addon, not default or UTX scenery, for Vandenberg AFB. The second screenshot definitely shows UTX night lighting objects are active (what look like balls of light in the top left) but again not knowing where it is makes it difficult to comment further (especially as there is no indication as to what you think is wrong with UTX in it).
While you tell us what video card you have, FSX (like all versions of MSFS) is a CPU intensive app, it is therefore the available processing speed of that which determines how well it looks. You therefore need to provide full details of your system so that others can make suggestions i.e. we'd need to know CPU and speed, RAM, video RAM, OS at least.
There would also be a need to know what other background processes, apps and system trays are running at the same time as FSX. They will all steal from what FSX needs to perform to its best.
You'll also need to give more details on your current FSX slider settings, and if you have made any manual tweaks to your FSX.cfg
As an FYI, some of the other FSX features which have more performance hit are:
- light bloom (similar to 2x water causing multiple renders per screen so best to leave it off)
- AI aircraft (as FSX now has to calculate, place and handle all these now in addition to your own aircraft)
- road traffic
- weather (more so if an external tool is used to inject it as that will be stealing cycles from the CPU - also even the Active Sky people usually recommend cloud draw distance of 60 miles)
- ground scenery shadows (best left off)
- aircraft casting shadows on itself (best left off)
- autogen
While you show issues outside of UTX, here is a thread from the Ultimate Terrain support forums about
Diagnosing UTX Performance Issues.
Anyway, the above should give you a few things to get you started on the road to getting some improvement in your FSX experience.
Jeff