Hey there
 
Tonight I upgraded my main music computer to Win 10. Honestly I was not ready for it- I was going to wait, but it tricked me in to updating.
 
After the first look, Sonar Platinum looks like it runs in low resolution. Everything is big. The screen resolution did not change, it says, 1929X1080. The desktop background looks normal, but Sonar looks huge, like it runs in 800X600. Looks like it does not comply with the screen resolution setting. Is it video driver? What else can I tweak? Thank you.

Try setting Windows resolution to a new value, and then setting it back to the resolution now. There have been reports of default settings not carrying forward correctly.

Also try rebooting and updating your display drivers from the manufacturers site (e.g. AMD or NVidia).

The Catalyst driver for AMD is up to the latest version. I did try to change resolution to lower and back this am, and it did not help. The software synths also open huge. This is very uncomfortable because one view takes the entire screen. But desktop background looks normal, so it is likely Sonar issue. On my other computer, same happens to Yahoo messenger. Also there is blurred picture on both computers, but that is another issue. Sonar is running in low resolution with VSTs. Also I think Sample Tank 3 opened looking normal...

What ever it is it's down to your display adapter and drivers. Try googling your display make and model and Windows 10 + resolution to big... For further advice.

Another thing to do is check your monitor refresh rate. Win 10 often gets it wrong.

Also make sure the screen is set to 100% for aspect ratio on the display preferences.

Btw next time you get tricked into updating press cancel :)

vladasyn
But desktop background looks normal, so it is likely Sonar issue. On my other computer, same happens to Yahoo messenger.

Well the problem with Yahoo is not a SONAR issue . Considering how many people are running 10, if it was a SONAR issue, you wouldn't be the only person experiencing this so far. It has to be system-specific...I also use an AMD card because it's fanless, but I've been less than happy with their update history. Some work just fine, some are...well...maybe not so wonderful. 
 
They do updates pretty often, you might want to check again.

The issue *might* be Sonar-related or interaction between Sonar and Win 10. I would agree that it is Windows only if eveything was in low resolution. If I change it to 800X600 or else, my desktom background will become inlarged. This is Sonar issue, because everything else is small like it should. Microsoft suite- Word is small. Internet looks normal. Have you ever tried to change resolution? Everything would change, not just certain programs. Sonar is missing some setting that would make it respond to the proper resolution. I dont know how it works, but something misreeding the setting. The Yahoo messanger is on another computer. Not related but it just means that it is possible for some programs to not respond to settings.
 
You saying- the driver. If the driver specifically isolates Sonar out of other programs, then this is something to be adressed between Cakewalk and AMD. This is not my responsibility to connect right people so that they can figure out the problems they created. This is pretty big issue. I can only see 3 track on a 27 inch screen, this is how big it is. The Nemesis software synth takes the entire screen. This is not a matter of being uncomfortable, this is a matter of being unusable. When they released last updae, they speifically advertised that it is compatable with Win 10. But not with every Window 10...
 
How did I get tricked? I cloned my C drive with Acronic because it had no space left. On the old drive the WinX icon was saying, "Your Windows 10 is ready". After I cloned, the icon changed and was saying, "Reserve your copy of Windows". I said, "wow- it does not remember that I registered 2 months ago and already had it ready for me. So I wanted to reserve it. I clicked on "Reserve your upgrade", it looked at few things and then said- "Let's do it'. It was 1 in the morning, but I figured- it is a push that I need- I would never upgrade otherwise. Plus- Cakewalk says- it is fully compatable- what do I have to lose?" So I let it do what it wants. It told me to sit and relax... And then it did it.
 
So here I am: can see 3 tracks at a time. I am happy that it is not your or Cakewalk's problem. Untill it happens to one of you.   

something similar http://forum.cakewalk.com/FindPost/3268709

The "fix" in post 6 of this thread took care of the issue for me-
http://forum.cakewalk.com...ndows-10-m3268709.aspx