Hello Tejas, Had same problem with resolution, here is how I fixed it.
Note down your screen resolution, Horizontal, Vertical, Diagonal and Aspect ratio.
Mine is 1366x768, 11.6", 16:9
Goto website :
https://sven.de/dpi/Choose your closest match to find your PPI........PPI = DPI.
Click on link and calculator shows answer at top of website. Look for PPI and forget the decimal figures.
My DPI is 135
After rooting Remix OS your can change the file System/Build.Prop
Change the number in these lines.
ro.sf.lcd_density=160
There is another line directly below, similar with 160 too, replace the 160 with your DPI/PPI taken from above website.
Now the number 160 may be different because of our different screens.
Hope that helps. My resolution is now perfect.
(I dual boot with windows 10 and RemixOS for PC Hacked, available on XDA, this is a pre-rooted version 2.0.205.)
Alex_G