I will likely release an update tonight which will likely help the problems you experienced, but I should note a few things.
- The new V3 client has huge databases built in to determine your nearest city, county and CWA. Although this code is very efficient and fast, it is called repeatedly as your coordinates constantly change. This can put a toll on your system. However, I did do some work in the new update that should alleviate some of this strain.
- The V3 client auto-detects the GPS and automatically connects to it. If you have some sort of problem with your GPS... you reboot or you unplug it and put it in another USB port, you will be likely assigning a new Com port to it. This will make your Emulator look for it in the wrong location and meanwhile SN will auto-detect it, lock it and prevent your Emulator from connecting to it. Meanwhile SN will have it and be using it in the background. The key here is if for any reason you ever need to reboot or shift the GPS to another USB port, shut down SN, make sure your emulator has a lock on the GPS first, then start SN and it will grab any virtual com port that the Emulator has available for it.
I expect the new version to solve the vast majority of your issues. Your exiting version will auto-alert you when it's available to download.