Did you quit FNV for awhile and came back recently to play it again? If so, many of your mods might be out of date with the current patch of FNV. If not, it's too much vram usage or too many mods conflicting. If your not already using the 4gb enabler, i highly suggest you do that. And about the compass issue, make sure you use Unified HUD project is your not. That should fix your compass problem.