Windows 10: Alt+Tab issues and frame drops in-game

Recently I have built my own gaming pc, one easily capable of consistent 250+ frames on many of my favorite games. After attempting to use a dual-monitor set-up, on start-up, a noticeably long black screen appears where it never used to. This would clear after about 10 seconds, but now, games that would run at 250+ fps, are now struggling to maintain 120-145 fps. I'm not tech savvy past the hardware, so any help would be great

:)

 

Weird alt-tab out of fullscreen games.

Hi Simon,

The multitasking capability of a game depends on the total memory of your computer. If you have large amounts of RAM on your computer, it can multitask heavy programs easily like high-end games. To ensure that we can provide the appropriate resolution
for your concerns with the alt-tab function, we’d like to ask you a few questions:

• What were the recent changes made on your computer before you experienced this issue?
• When did the issue start?

• Have you pressed the alt-tab key during you play Rainbow Six Siege? Or it just happen without pressing it?
  
• Does the automatic ALT-TAB behavior happens on other games?
• Do you have any other programs running on your computer while playing?
• What is the anti-virus program you're using?

• What is your device or system specifications? To know, follow these steps:
  1. Press Windows + S and type
     About your PC.
  2. Send us the information listed under Device specifications.
  
  

Moving forward, if you're multitasking while playing, we recommend that you play this game only without doing other tasks. Pressing ALT-TAB or performing a multitasking interferes with the performance of your video card, especially if you're running a heavy
game like Rainbow Six Siege. It will generate screen viewing issues like intermittently switching your game screen between your desktop environment.

For now, restart your game and do not press ALT+TAB while playing. This will allow your video card to dedicate its graphics performance on the game only instead of your desktop environment.

If you would like me to provide additional advice, simply respond to this thread. I will get notified and I’ll reply to you as soon as I can.

 

Alt+Tab screen resolution issues while gaming after latest update.

I play games on an Asus laptop with only an NVIDIA 960M graphics card. I play some games at lower resolutions to keep up frames while gaming. Prior to the update I could alt+tab out of the game and the desktop screen would return to 1920x1080 and tabbing back in would keep lower resolution I have set for the game. Now, when alt tabbing out of of lower resolution screen, Windows desktop reverts to the lower resolution I have set for the game (in-game resolution is 1280x720, as exclusive fullscreen). And when tabbing back into the game there are some video settings being used that are used for 'borderless window' instead of my setting of exclusive fullscreen.

 

alt tabbing increases system performance?

Skyrim doesnt work correctly you alt tab, but if you alt tab to it again while the screen is black, it loads up with the windows cursor over the top. If i repeatedly do this, eventually it fullscreens properly without issues. Slightly weird.