Yes, you keep all progress after PS Plus expires.
When PS Plus expires:
You can no longer play Battlefront 2 until you either subscribe to PS Plus again, or buy the game.
If you buy the game, you can no longer play online until you subscribe to PS Plus again.
You can no longer access your Cloud saves until you subscribe to PS Plus again. Therefore you ...
I have bad news for you. It appears your TV has very poor support for HDR.
According to Sony's spec sheet for the KD-85X8500G:
DISPLAY TYPE: LCD
BACKLIGHT DIMMING TYPE: Frame Dimming
As you already know, HDR is supposed to produce very bright whites, and very dark blacks. It's the perfect feature to showcase the abilities of an OLED display.
As of now you cannot play GTA 4 on PS4. It was originally released on Xbox 360, PS3 and Windows PC. While current generation Xbox is backward compatible (so you can play Xbox 360 games on Xbox One), it's not the case for PS.
Some PS3 games are available via PS Now subscription service, but I don't see GTA 4 in that list.
And in general, if you buy any ...
No, you cannot do this because Bloodborne save files are bound to a PSN account.
I've just tried moving around my Bloodborne saves via usb copy method from this question: Copy game data from one PS4 to another? and my second account cannot see saves created by my main account.
It's possible now.
Connect your PSN account with your YouTube. Go to Settings > Sharing and Broadcasts > Link with Other Services > YouTube and enter your credentials there.
Record a video. Luckily, PS4 does everything for you automatically. It saves up to 60 minutes of your latest gameplay (this is configurable in Settings > Sharing and Broadcasts > Video ...
Yes, you can. It was added in a free patch.
Go to the Menu, Discoveries.
When not on a planet (in space somewhere) you can select the "Upload All" (up arrow) in the bottom left of the screen.
If on a planet, the Discoveries screen shows your current system. Go up a menu from there (right-click on PC) to the Visited Systems screen, and you can use the ...