I unblocked you because I was told I had replies that would make me laugh.
First of all terminology. Windowed and Full screen. “Borderless Fullscreen” is just “Borderless Windowed” renamed - just like FS have renamed it to “Fullscreen” when it’s still a window over the desktop without a border.
I have 26 years experience building and maintaining computers I built for myself and others, almost 10 years of doing it for a job and the rest just as a hobby - also spent a few years building GSM equipment for Siemens - I know a little bit about troubleshooting etc. So yes, my drivers are updated, and so is Windows on two of the partitions I can boot to for testing why DT broke this time.
My current setups are my gaming rig, a 7800X3D with a 4080super, 32gb and 4tb in 2 m.2 nVMEs, a 4k Samsung Neo g8 main screen and an Asus 1440p auxiliary. My stream/recording PC which is a 10900k with a 6900XT, 32gb, 5tb of storage across m.2 nVME and SSD a 4k Samsung TV and an Asus 1440p monitor. And my third PC which serves as a media server, stream monitoring and a screen for my cats to watch bird videos on youtube on is a 5930k, dual GTX980s, 32gb, and 8tb of SSDs, with a pair of cheap 1440p’s.
I have the screens in two clusters, 4 in front of me from game and stream PC and the other two behind me, all three PCs are controlled by a single keyboard and mouse at all times. They are linked together with Input Director for controls, Voicemeeter VBAN for audio, and NDI for streaming over network so any program on any screen can be shown anywhere else, this is over a 2.5gbps independent internal LAN on a managed switch.
I stream and game across these PCs every day for multiple hours - in fact I have streamed almost 2000hrs of Darktide alone until 1.5.4 dropped and it became unplayable AND unwatchable with the stutters and hitching.
I use multiple monitors, with multiple overlays from multiple programs, and have been doing so on and off for well over a decade since my first foray into streaming, so I am pretty sure I can say with some confidence that the only thing not being in full screen EVER does other than “nothing” is increase the GPU usage and make things sluggish or laggy as it tries to render more than the visible screen resolution. Not to mention being unable to pass raw mouse data to some programs causing huge input lag.
I will totally admit that on some things it makes no difference - and there are VERY FEW programs that can run in a window and get some benefits, but darktide is not one of those things, and pretending that Fatshark has the skill to implement something like this flawlessly is frankly laughable.
I used google to prove that the MAJORITY of cases Fullscreen is the better option.
You suggest that my use of google was “incomplete, outdated and misleading” and yet you cherry pick an article that is 5 years old and then only the section that supports your beliefs. Not to mention written by someone who has very little clue as to how computers work.
“One example is when you give an application full control of your desktop, you cannot run any other processes in the background.”
I wonder how I have managed all this time with not being able to run OBS, Steam, Voicemeeter, my overlays etc in the background!?
Here, let me cherry pick a little something for you; the main reason why windowed is ass from the exact same article;
“When a game is run in borderless windowed mode, the game does not have full control of the display– that overarching control is given back to the Desktop Window Manager (DWM).”
… and DWM is notoriously shitty at doing its job, it uses up processing time, takes extra resources and divides the resources remaining between all the applications that want to render stuff on the screen and the desktop environment, so the game being played does not get the resources it should. And if you leave all the BS bells and whistles on that come with Windows like Aero or whatever the visual fluff is and the news feeds etc… you need a whole extra graphics card. Its dumb.
I went from stable 120-140 in 4k depending on map and action to an unstable 70~ (40min 120max) on a 4080super on a fresh install with fresh drivers.
I went from stable 100-120fps in 1440p depending on map and action to an unstable 60~ (25min 100max) on a 6900XT on a fresh install with fresh drivers.
Esoteric DX12 troubleshooting isn’t gonna fix it.
I type this waiting for the plumber to get the kitchen taps back together and it sounds done, so yeah, making people despise you for funsies by being a contrarian to everything must be a riot.