Whats the remote connection / viewing program you are using?
What you are seeing is not a PAC Display limitation, but a limitation of the remote view software.
Its just doing a dumb mirror of whats on the remote desktop gets thrown up on the client (your end). A straight 1:1 transmit.
Some are smarter than others, for example, VNC does not scale, but something like logmein does.
VNC can not handle multi-monitors, but logmein will allow you to chose which monitor at the remote end you want to view with the client.
I'm not a huge fan, but I do use logmein since it does not require any changes to be made to the firewall at the remote end, and because it does scale..... The downside is that because it scales, things can get a bit small at times, but there is a way to turn it off and view it 1:1 (like you are now)..... logmein gives scrolls bars in this case so you can pan around the image.
Years (and years ago) I used to use PCAnywhere to do my remote viewing of PAC Display, but it required changes to be made to the firewall. I'm not sure if that's the case any more.
There are many many many different bits of software that are just for remote PC viewing and control. If you dont like the one you have (sounds like it), pick another. Many are free or have free trials so you can test them out.
Your laptop should have no trouble at all, your S2 and ipad will be a little more challenging. Not sure what Android and iOS clients logmein has, you will need to factor that in when you do your testing.
groov is a solid option. If you have a VPN set up, that's the best way to remotely access the groov box which will go at the site.
If no VPN, then a simple port forward on port 443 is an option. Talk with the IT guys and see what they have set up.
In a nut shell, you would put a groov Box at the site, connect your existing PAC Control strategies, build your pages for PC/ipad and your S2 and your done. (Note. Your PAC Controllers will need to be running firmware 9.2 or better to work with groov).
Your laptop, S2 and ipad all have VPN, so you just turn them on and connect to the groov Box and BOOM! you will be viewing your data.
You will find it so handy that you will be using while you are on site as much as when you are away.
The best thing of all? No scroll bars needed. groov uses scalable vector graphics (SVG), so the screen scales to fit what ever device you are viewing it on.
Oh, and on the S2, you will need to install Firefox for browsing groov. The S2 browser is too old in Honeycomb and hit and miss on the Jelly bean update.
tl;dr. Try some other remote desktop viewing software till you find one that scales. groov rocks.