I am a controller player on PC, after utilizing and experimenting with Portal it appears turning off the aim assist zoom snap does nothing when hosting online. Hosting an experience locally actually can turn off zoom snapping but leads to additional issues such as damage range multipliers. I think what's happening is the game is running on a different version when hosting a local server vs online server. I have tried editing my player save file manually to force the setting off even though it doesn't exist in the menus anymore to no avail. This effectively makes Portal near useless to all controller players.