how to make dosbox full screen after alt tab

Let's try to understand the situation here. TLDR question is - what is better for alt tabbing, more cores or higher CPU.or neither? Is this just fundamentally a constraint of the way Windows manages resources when it comes to Alt Tabbing? I am completely platform agnostic and have zero loyalty with any brand, so I repeat: $500 to save 1 freaking second.so it's gotta be worth it). If this is fundamentally not possible and / or mult-core CPU's have no impact on what I'm trying to achieve, please tell me and not try to convince me to upgrade because, reasons. I am definitely open to switching to AMD but please understand that I'm looking to shave like 1 second off the alt+tabbing time so I really don't want to spend $500 on a new CPU and motherboard only to find out I can't even get a 1 second boost. (NOTE: PLEASE don't make this an Intel vs. Will this help? Or is this fundamentally just something I can’t throw resources / money at? The only thing I’ve yet to try is switching from Intel to AMD to get more cores and threads. I know it's absurd that I'd be willing to pay to save a second or two, but meh, first world problems. Even a 1 second boost would be appreciated. I constantly alt+tab all day, so even though this seems like a minor issue this is actually a real annoyance for me and I’m willing to pay to improve it. Christ, it's still about the same as the computer I had 20 years ago. But the alt+tabbing speed is still about the same as my other 6 year old machine. I upgraded to one of the fastest SSD’s on the market (Samsung NVMe), I upgraded my memory, and I have CPU, GPU, and memory overhead of around 50% for any given game so there's no bottlenecks.

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How to make dosbox full screen after alt tab