Seeing as the thread title is "
Pausing game while in Solo" I'm guessing the OP made a typo in point 2 about pausing Open.
I've conducted a little experiment to see how often a Solo player instance calls home to the BGS:
1. In a ring type station, I requested launch and when my platform was moving I disconnected from the internet. I was able to launch, exit the station, see the NPCs pootling around and fly around the station for a while before getting booted to the Main Menu.
2. In SuperCruise I disconnected the internet and was able to fly around the system for about 30 seconds before being booted. (I'm guessing the game wanted to generate Signal Sources or something and called home.)
3. Entered a Strong Signal Source, disconnected internet, flew around 3 Elite NPCs that waited for about a minute before they zoomed away into SC.
4. Entered a Weak Signal Source, disconnected internet, saw 5 NPC sidewinders and 1 NPC Anaconda. Got engaged by the sidewinders, almost destroyed 1 when my shields dropped, booted to the Main Menu. (Guessing that either hull damage or NPC destruction needed uploading)
5. After being granted docking permission 6km away from ring station, disconnected internet, almost got to the landing pad before being booted.
From this, it looks to me that if the Solo player and all the NPCs in their instance were frozen, nothing would need to be referenced to the BGS server. A pause function could work. Mission timers and all the other gumpf would continue to tick along, but they do that anyway when you log off from the game.
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You can check ED's demo and see there is pause.
FD BRING PAUSE BACK!!!
Back in Beta I made the mistake of hitting the Pause button, being presented with the Pause Menu, going off to attend to matters of the bladder and coming back to the ship re-buy screen. That's when I realised Pause wasn't Pause in Elite Dangerous
