I have installed datalock and it works fine but I think it's slowing my machine a fair bit so want to completely uninstall it. Does anyone have the answers to the following questions?

1. Are there published uninstall instructions?
2. I had started to the uninstall process and it wanted to reboot the device but I stopped it as I didn't want the decryption process to start without the computer being usable, do you know if the computer is usable while the uninstallation takes place?
3. How long should I expect the decryption/uninstall to take for a 500Gb drive?
4. Any things i need to look out for?