Hi Hawardenleaders
I've been an A10 user for a number of years now and not had the problems that you have described. The orange circle should track smoothly as you move the centre joystick in Map Mode. By checking the box in the settings options in Satsync, you can ask it to fetch and download Spoiler pictures for caches when you import your PQ/GPX file, although it will obviously take a lot longer, depending on the number of caches that it has to process.
As the A12 is the newer unit, it may be that it still has some bugs, so if you haven't reported them to Satmap directly, it might be worth doing so. I've always found them to be very helpful. It is also worth checking that you have the most up to date version of Satsync and that you are running the most up to date firmware on your A12. I can see that a Satsync issue with downloading Spoiler pictures from GC.com was resolved back in Version 1.520, but that was a long time ago now. You can check the version history yourself here https://satmap.com/satsync-version-history
Good luck, Luke