Even on my 8 year old Mac Mini Easel runs like a champion. Albeit a Champion who hasn’t trained in a few years and has eaten too many cupcakes since then, but a champion nonetheless.
I’ve always hated trying to troubleshoot Windows problems. Most likely this one is caused by Easel Local not playing well with some other component of the serial/usb driver.
Which version of Easel Local are you using?
If you are running Windows (I’m running Windows 7) you can look here:
Control Panel\All Control Panel Items\Programs and Features
This will display a list of items installed on your computer and the screen has a column for version. Just look for EaselLocal.
I would try a different USB cable. USB cable are notorious for going bad, they are usually very cheaply mass produced and fail a lot.