I'm Searching For A Solution To This Issue In My Game, Please Help!

@Katiardguez 

It's not a bug.  It's just how the game works.  It seems when you go anywhere off your home lot that you will get sims added to the relationship panel that you didn't meet.  The relationship bars will still be at zero and you can't pull up their profiles.  But the majority will disappear from the panel after a bit due the game's relationship culling. Most of them are NPCs like bartenders, stall vendors, gym trainers and the like that you might interact during play that you don't introduce yourself to but have socials with like ordering drinks, food and mentoring fitness at the gym.  There are a few others that are more or less background players that will show up once or twice and you never see them again and they too, will eventually disappear from the panel. The Strangerville sims, conspiracy theorists, scientists, infected and MIBs that you might interact with during the story, do it too for instance. One note though, I play with aging on for unplayed sims so I'm not sure it works the same way when you play with aging off.  With aging on, some of them will die or get culled when they no longer meet the age requirements for the role they were made for.

Hope this helps.  

That is the thing my sim {Doesn't Interact At All} she doesnt do any friendly, mean, respectful, etc introductions and doesn't buy anything from the npcs vendors. As soon as the lot finishes loading she is acquaintance with every sim on the lot automatically in the relationship panel and I'm able to see their profile,they don't get deleted after a while at all. On my modded save game I have to use a mod to be able to delete them manually but on my vanilla/no mods save game I have to deal with the lag every time I open the relationship panel due to the numerous fake and imaginary sims that my active sim truly have never met or had any interactions. 

Thank you for your response and help🙂

@Katiardguez 

One other thing, if your sim has earned the Beloved trait, relationship bars stop going down so they never drop out of your relationship panel until they die or you do something to cause the relationship to zero out.  I'm not sure if that applies to most of the NPCs because if you never introduce yourself to them, you shouldn't have a relationship above zero.  One other thing that I've noticed is that if you are in a conversation with another sim that you do know and an unknown sim joins the conversation, a lot of times, you will then know them even if you've never spoken to them and your relationship scores will go up slightly and their profile becomes available.  

What you describe about your sims knowing all the sims on a lot when you load into it, I haven't noticed that in my game. Mine seem to accrue over time as far as I can tell.   I will watch for it to see if that is happening now though. 

Since this is happening for you in both a modded and vanilla game, the only thing I can really think of that might help is to repair the game and reset your user folder.  Do the repair first and then reset the user folder.  Resetting the user folder is pretty easy.  Just rename your current The Sims 4 folder to something else or move it to another location outside of the Electronics Arts folder.  Start the game and a new one will be created.  Once you've made and placed the sim, save and exit.  Then move or copy your saves, tray, screenshots and mods folders from your old to your new folder.  You might want to hold off copying the mods folder in order to test first just to make sure it's not a mod causing the problem.  You just play awhile to see what's what and quit without saving when you're done.  Then move the mods folder in and test again.  Not much to it at all.  Just takes a bit of time.

Hope this helps.

I wouldn't mind having all those sims on the relationship pane if my sim truly had directly or indirectly some type of interaction with them but like I said that is not the case. As soon as a lot finishes loading every sim get added automatically to my sim relationship panel.

I have tried numerous times everything that you have suggested but as of today there is still no success on this issue.

Hopefully EA or a modder would be able to fix it someday, Thanks.

Update: Now my sim doesn't even have to leave her home lot. Any npcs that is walking around the neighborhood becomes automatically acquaintances with her in the relationship panel with No Interactions whatsoever ☹️