No offense, but when you ask a question, provide details/be specific. Being vague with "strange load" doesn't mean a damn thing.

1. There is no such thing as "best" because that is subjective due to the amazing options that exist. just try whichever ones you want following their included readme files.
2. use the readme files included with them. it's just that simple to install them regardless of retail or Steam.

@Marcel2015 Excellent list 👍

Contacting RPH instead of this site? Not trying to be an a-hole, but if you have issues with their program and need support, they should be the first place to ask this rather than here. I mean, you wouldn't go to a car dealership to ask for help with your water heater, would you?

@bharatvyas1423 Blank? You do know that you don't open the.ASI file with anything right? You just copy and paste it from the download into your GTAV root folder (where the GTAV.exe is). It does not have any config files to it either.

Just remember to be in edit mode first, otherwise it won't work.

Retail or steam? If it's Steam, you can try verifying the cache. That will redownload and restore modified files (outside of the mods folder) so it would then restore the social club launcher to the one needed/most current one.

Don't forget to save your setup to reuse. Also, you can use that to make custom MP models instead of just recreating your MP model from Online.

You can try DLC/Add-On Vehicles Spawn on Traffic by I'm Not MentaL. The text document in i has the model names, so you can lso add custom add oon cars to it as well if you wanted to.

@krashadam Yeah, the one we normally used, the mod author has seemed to have stopped (perm or temp) developing theirs, and so the one I linked to is what the moderators have been pointing to in order to spawn them.