[HELP]Vray Setup

Hi, im quite new to 3D stuff and im trying to create a scene where im quite havin some trouble with the correct vray setup.



It's a simple scene. im trying the basics with by creating Cloth/Fur/Glass/Reflection Etc on a single scene
I'm havin some problem when i try to render it it shows some uneven colors near the window reflected by sunlight(prolly due to caustics enabled) and i saw some other renders with caustics on but they dont have that.. 2nd is the shadow which i highlighted in blue.. its not even or blurry and im not sure if it is normal. attached is my vray settings




Any help would be greatly appreciated..

Thanks,

PS: pwde ba magtagalog dito?

im not sure if this would solve the problem pero try mo lang siguro. check mo yung subpixel mapping sa color mapping sir...