I see people say stuff like omg FSS so great and you are like "at least" such and such like its better in some way that you have to keep zooming on planets. I find it any number of variations on tedious and pointless but for you its an improvement. Whats it doing for you? Its just a set of hoops to jump thru before you can see that map.
Which is only a variation of the hoops we had to jump through before - fly into a system, honk, fuel scoop, look at the system map, fly towards the first dot, slow down, wait for the DSS, fly to the next dot, rinse and repeat. Scanning a system of 25-40 bodies in this manner could take hours, especially when half the system was in orbit of a star 160,000 Ls from where you came in. Now that same system can be scanned before my ship is even done scooping fuel, and I can see in the results things like "Oh, there are geysers here, and this planet has a chemical makeup of materials I actually need, guess I'll fly here, map it, land, check out the geysers and collect some materials", instead of flying all the way out the butt-end of a system to find the only planet that has the material I need is another 140,000 Ls in the direction I came from, but in orbit of the other star.
So what's it doing for me? It's making better use of my time, better use of my efforts expended, providing systems that are at least interactive (frequency tuning and surface mapping), instead of passively sitting there, waiting for a scan to complete while drool dries in my lap. I guess if dried drool is your thing, than sorry for your loss, but it's my gain.