Sometimes I wonder if it's 2.4 GHz interference or phone-handshake sweep issues?
Interestingly, my Android (Pixel 9 Pro XL) opens the car if I have BT turned-on anywhere in my house and the car is in the garage (carriage house for the hoity-toity silver-top owners).
The key fob opens it seemingly at random distances, sometimes 10 feet, sometimes 10 inches (of the latter sometimes immediately, sometimes after a few seconds.. or several). It's inconsistent.
Doing a frequency sweep of my area, selecting "Pair New Device" there are a few distant signals nearby the car in the garage, none in my basement music studio or theater.
Leaving my BT on the car will aggressively pair-up in the house though, so I keep BT turned off most of the time (drains battery anyway and opens some hacking vulnerabilities for the paranoid I guess).
In "congested" areas, there are a LOT of BT signals and I notice usually the car is less responsive to the FOB and more delayed to open, depending on her mood, the weather, etc. however the phone option usually get her open at a good distance.
I think most FOBs use FM instead of BT frequencies though, and the choice to use BT probably helped-out the phone connectivity as a decision for design so they don't have to use some sort of roundabout OnStar equivalent for "speedier" response times. Maybe a firmware update on the FOB (probably not possible) do pulse a signal less-frequently (like every 5 seconds) might extend battery life? Not sure how GM does it with their Cadillac and Corvette key FOBs.
On a side-note, why doesn't Lucid use speed-volume and speed-EQ compensation like every other car? Seems like it'd be a no-brainer.
There's mics inside too, that could be utilized as active noise cancelling like Cadillac, Mercedes, BMW, etc. Shrug.