Ok, we are based in central London, the computers are running windows 10 Pro latest build, are i5 with 8GB ram, the internet is 80MB/s and 300MB/s depending on location and we have tried Edge, Chrome, Firefor, Opera. So it is not our IT.

We are continually being told to clear the cache / refresh the browser and so on.....

I am sure if you are a small business / sole trader with a handful of trnsaction a day it is fine.....but we have loads of Sales Receipts and Invoices every day and it is just not working