Macbook Pro with 2nd monitor - how to set Graphics

Hello,

I have Macbook Pro 15 Retina with El Capitan and Parallels Desktop 11 with Windows 10. I have 2nd monitor Dell U2713HM. Dell is the main monitor. If I set Graphics - Retina Resolution to Scaled, Parallels windows (I use coherence mode) look fine on the Dell but don't on the Macbook display (the text and everything is blurred a bit). If I set Best for Retina, it looks fine on Macbook but not on Dell (blurred).
I've tried the same configuration on my second Macbook Pro 15 Early 2011 without Retina and it is the same - it is fine on my Dell and not on the Macbook display.
How should I configure the Parallels to have windows fine on both displays?

Thanks,
Zbynek

 

Hi ZbynekR, Follow this article and install Parallels Tools manually.
Once tools are installed, please configure the display settings and check how it goes.

 

It didn't help me. Everything is fine on my Dell monitor, but it doesn't look nice on my Macbook Retina. You can see a screenshots (first one from Dell, second one from the Macbook).

 

I think I found a solution. I don't know why, but when I set Scaled it sets the size of text, apps and other items to 125% on the second display (on Macbook Retina). If I manually set it to 100% it looks nice again.