Hi Malinda,
I already now what was going on with our issue, I get the solution on this link: http://www.gecko-studio.co.uk/contact-photos-in-lync-2013/
And thats it, changing the client policy with correct values will allow SKB client to show photos in high resolution
"Lync Client Policy
Regardless of which implementation method you adopt for your contact photos, overriding control rests with the Lync Client Policy that is applied to your users. You need to ensure that the relevant settings in your Client Policy are configured correctly in
line with your Photo requirements. There are two settings of note, -DisplayPhoto and -MaxPhotoSizeKBThis
often catches people out; for example if your left wondering why your nasty looking AD photos are still appearing for users instead of your glossy Hi-Res Exchange ones, it’s probably because your Client Policy is specifying AD photos only."