And what is the point to have such a low resolution with a 4k monitor...
Well, you got a 4K monitor. This means that instead of an HD amount of pixels covering your 15" display, you now have 4 times as many pixels covering that same display.
Now let's say that a clip thumbnail in Resolume is 160x120 pixels big. Displayed on a "regular" HD screen, you'll be able to fit ~10 thumbnails on the screen horizontally. On a 4K screen, you have more pixels, so the logical result is that you'll be able to fit a lot more thumbnails on screen. That's good, right? That's why you got the 4K screen, right?
Of course, what you didn't count on is that this results in those thumbnails looking a lot smaller. This is because although you got 4 times as many pixels, your actual screen didn't get physically bigger, in inches. So now you're cramming a lot more pixels into the same space, making everything look tiny.
Of course a lot of people don't like this. They want 4K, but they don't want things to look smaller. So Windows offers you the option to scale things back up. This is the slider for "size of text, apps, and other items" that was introduced in Windows 8.1. When this slider is set to it's highest value (which is probably the recommended setting) you're essentially performing the same action as setting your resolution back to 1920x1080, except the resulting image is technically sharper.
Applications need to support this slider. Resolume doesn't yet. It requires the whole UI to be rewritten, which is a lot of work. We're going to do this eventually, so far we've focussed on fixing critical bugs. For now, you can use the following work around to trick Resolume into scaling along with the slider:
http://www.danantonielli.com/adobe-app- ... plays-fix/
Note that not having the Scaling Factor at 100% can also result in your output resolutions being messed up:
https://resolume.com/support#0x0
All in all, you have a really powerful computer. A lot of people buy this computer just so they can have more screen real estate for clip thumbnails and output monitors. If you want to have the regular looking interface on a 4K screen, you're going to need to be a little more patient until we've had time to meet all the requirements for HiDpi. Or maybe you can ask yourself if you really need a 4K screen if you're going to scale things back up anyway.
