Ghost/virtual monitor with screen share - effect on resolution?

[Librarycat]

Hi,

I am using an HDMI ghost monitor. I screen share my full-screen Powerpoint presentation from that monitor which works great so I can have my main monitor not as cluttered by a big 'ole full screen presentation. I have the ghost monitor set to 1920 x 1080. 

I am curious: have you noticed any resolution issues (ie, worse resolution) when screen sharing from the ghost monitor?

Thanks!