There must be some kind of conflict going on with your mods. When does it crash exactly and does it always seem to crash at that same point? I guess it could be anything from Thane Lives (or similar mod), to outfits, to both Kaidan and Ashley surviving on Virmire. Can you post a list of your mods?
This is slow and painstaking, but you should try disabling all of your mods and see if it crashes and start re-enabling them gradually. Alternatively, look at the mod pages for the mods you have installed and look for bugs that were reported or incompatibilities. There may even be updates to fix any issues https://xender.vip/ .
I don't think it's the horrid EA App that's causing this, but I was having issues just getting the game to launch when I was forced to migrate over to it. I'm having to run the game through a workaround that allows me to still use the old Origin launcher. There's a fix for those that bought games through EA and Steam. You can find instructions for it on the EA Subreddit if you've exhausted everything else.
