Picolog UI running very very slowly

I've just installed 5.21.5 on a 64-bit Windows 7 PC, and have been trying to use it with an ADC-20.
However, the response of the user interface is so slow to the point of being unusable. After a while it freezes completely.
For example, when trying to configure the input channels, it can take anywhere between 1 to 5s to respond to each mouse click on a button. I've not managed to get as far as logging anything yet.
I've tried uninstalling and re-installing, but no improvement seen.
Any suggestions please?
Thanks
Richard

Picolog 5.21.5
ADC-20 Driver 1.4.0.5, Hardware Version 1, USB 1.1, Unit variant 20, IDR78/32, Cal date 09Aug06
PC: Windows 7 Ultimate, 64-bit, 2.8GHz i5, 4Gb RAM

Hi I tried to recreate your problem on a Windows 7 64 bit machine, however it seemed to run fine. Can you try the following, its a very long shot but worth a try, close Picolog Recorder then go to the following folder:

C:\Users\*****\AppData\Local\Pico Technology\42f31349-afb8-471d-8a4d4fb7672be39b

where ***** is your user login.

Then delete any files in this folder or even the folder itself,

Try restarting Picolog to see if it has made a difference.

If the problem still persists can you try running the device on another computer?

Kind regards