has this game been patched yet to support 21:9?
 

No.  
 
You still have to hack it to do so, though you might want to look at this.  Fallout 4 is not on the list, but the game is supported.  
 
It's frustrating because it's fairly quick and easy to get Skyrim to go 7680x1440.  I personally gave up on jumping through all the hurdles required to go widescreen and simply play at 16:9.  Bethesda has no clue that there are displays out there larger than the usual aspect ratios.
 
 

I just fired this game up for the first time in a few days, and now it's very laggy.  It literally takes 1-2 seconds for anything I do to result in a change in the game.  Is this what you guys have been talking about?  If so, this sucks and something needs to be done about it soon.
 

Tweaked
I just fired this game up for the first time in a few days, and now it's very laggy.  It literally takes 1-2 seconds for anything I do to result in a change in the game.  Is this what you guys have been talking about?  If so, this sucks and something needs to be done about it soon.
 

 
It is exactly what I am talking about!!!! Mine seemed a second or two longer but that may be where you are.

No problemo here.

whiskers54

Tweaked
I just fired this game up for the first time in a few days, and now it's very laggy.  It literally takes 1-2 seconds for anything I do to result in a change in the game.  Is this what you guys have been talking about?  If so, this sucks and something needs to be done about it soon.
 

 
It is exactly what I am talking about!!!! Mine seemed a second or two longer but that may be where you are.

Any fix that you're aware of?

Tweaked

whiskers54

Tweaked
I just fired this game up for the first time in a few days, and now it's very laggy.  It literally takes 1-2 seconds for anything I do to result in a change in the game.  Is this what you guys have been talking about?  If so, this sucks and something needs to be done about it soon.
 

 
It is exactly what I am talking about!!!! Mine seemed a second or two longer but that may be where you are.

Any fix that you're aware of?

I am going to try and play for awhile tonight. When this happened I closed FO 4 and shut Steam down. I also shut my system down and that may be what it needs. I don't know for certain.
 
This seems to be a problem for a lot of people. I'll post later with results.

Tweaked
 
Any fix that you're aware of?

 
I just played for awhile and it appears that it has gone away at least for now.

whiskers54

Tweaked
 
Any fix that you're aware of?

 
I just played for awhile and it appears that it has gone away at least for now.

Whenever I get a patch or update I have lag, stutter and CTD issues unless I close Steam entirely and restart. I always open Steam first and check for client updates. It's better than having a client update downloading while I am playing.

Zuhl3156

Whenever I get a patch or update I have lag, stutter and CTD issues unless I close Steam entirely and restart. I always open Steam first and check for client updates. It's better than having a client update downloading while I am playing.

 
I do this also. This is how I noticed the download. After that I shut Steam down and then start it again. That didn't work as I did encounter the lag. A complete system shut down and reboot apparently did the trick.