So, i've been using the Harpoon for a few months now with my macbook pro, i'm also experiencing this issue, i always thought that it was just a compatibility issue, even tho it does say compatible with mac, but a simple switch on switch off lets it continue to work normally...
however.. i just got the ironclaw rgb wireless, i used both the 2.4ghz and the bluetooth, they both also have the same stuttering and choppy issues on my windows PC.
i plugged it to the PC to update both dongle and mouse firmware, but that didn't cure the problem, and i had this stupid idea maybe it was the battery, however the battery was well over 70%, so i plugged the ironclaw to a usb outlet and the cursor is moving as smooth as a babies bottom, indefinitely there must be something wrong with the transmitter and receiver components, i'm not saying the design is bad, i bought it cos i like the ergonimoics and RGB quality, but i have used 3-4 wireless gaming mouses before the harpoon and then the irconclaw and i must say, i have never encountered these type of problems before.
