Payday 3 will require a constant internet connection
Open link in next tab
Payday 3 Will Require A Constant Internet Connection - Gameranx
https://gameranx.com/updates/id/470907/article/payday-3-will-require-a-constant-internet-connection/
Payday 3 developer confirms that the game will require an online connection to play even if you're going through it solo.
You’ll need to be online to even play solo.