ok, what other services running on your system, do you have malware, is there something running in the background that is eating up resources?
there are so many variables, unless you had the same HP laptop I am using - its apples to carrots... 
mine runs great, I can add move delete waypoints, recalc the route all if it and there is no delay.
I don't know what "malware" is so I don't know if I have it or not. To compare apples to apples, I was using the previous version of Mapsource on this laptop. Now I am using the latest version, on this laptop.
Nothing else has changed. The software functionality has drastically changed however. Unfortunately, there were features in the older version that seem to be no longer available. It doesn't appear to be a hardware issue as much as it is software related.
OK. That's awesome. 
Still doesn't change the fact the program works fine for me.........the way I use it. It is noteworthy that I do not use the program to level of which you write. I usually find two points, and let it plan the route for me. Anything more complicated...........and I may as well be at work. 
Henry, I am glad to see that the program is simple enough for even you understand how to get from point "A" to point "B". However, there are some of us that are a little more sophisticated and would like to be able to use the software to it's full potential. I am sorry that I write in such a manner that is difficult for you to understand, but that is based solely on my education level and has no correlation to the software's functionality.