Windows 10: 1080p scaling issues on 4K monitor

I have a laptop which uses a 4K screen. The problem is that I want to run intensive programs however I can only run them in lower resolutions such as 1080p as in 4K they are laggy and unusable. The problem is that if I set my computer resolution to 1080p, the ui, especially text and icons, looks a bit jagged, unlike how 1080p would run on a native 1080p monitor. Is this able to be fixed or is this just something that's expected when using a higher resolution monitor, and therefore unfixable without having to alternate between 4k and 1080 whenever i want to use different programs?I want to poi

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Dual Monitor Setup issues - 4k and 1080p combination

The issue is worse than it seems at first. I have a 4k display (200%) scaling and a 1080p display (100% scaling) and even office apps look blurry on the 1080p display. If I unplug the 4k display and reboot the problem goes away. I believe the problem is
present on all apps and is a system issue. It's been suggested that to get the 100% scaling everything on both monitors is generated at 200% and then the part on the 1080p display is downsampled to 100%, resulting in the poor quality.

As it is Windows 10 is almost unusable with a very different DPI dual monitor setup.

 

4K and 1080p monitors

Hello everyone,

I have a question regarding the different resolutions of computer screens. I have laptop with a 4K display and I have a 1080p monitor. Most applications that I use tend to scale correctly when I drag them across displays. However some applications like IDLE
or Corsair UE don't tend to change their resolutions. They tend to stay the same when dragged to another display, so if it started on the 1080p screen it would go to really small and stay small on the 4k display and if I drag it from the 4k to the 1080p display
the application is massive and can't be viewed. Is there any possible shortcut which can be used to "refresh" the application without quitting and re-opening?

Thanks in advance,

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Scaling Issue With Extended Monitors

Recently got a new 4K monitor. It's running at 4k with 150% (Recommended) Scaling. I want THIS monitor to be my main monitor. It is centered to my setup and is the MAIN monitor I will be using, etc, etc. My old 1080p monitor has a recommended scaling of
100%. This is what I had been using for years and is most comfortable for my eyes.

My issue is:

Apps are blurry on the 1080p monitor; i.e. Apple Music is blurry.

The 4k monitor is just fine.

I can fix the blurriness by setting the scaling higher for the app itself in (app)>properties>calibration>DPI settings

I can fix the blurriness by setting my old 1080p monitor as my main monitor, and having windows fix the blurriness by turning that option on. This keeps the normal scaling and looks great. Only issue is that I want my Main monitor to be registered as the
Main monitor in windows settings so that all of my information and app work is prioritized there.

I can also fix the issue by setting both monitors to the same scaling, but that defeats the purpose of scaling. One is a huge 4k monitor and one is a 1080p I do not want massive text on one monitor and tiny text on the other. Rather ridiculous.

Why does it seem that the only fix I am looking for has to be done by first setting my old monitor as the main monitor? If I could keep my main monitor as my main monitor with the benefits of the blurriness and scaling being fixed then my question would
be answered.

Thanks for any help.