100% CPU usage for any click/operation ! ?

Zoho sheet is really good for collaboration work.

So, I have shared a single excet document with 3 sheets, each sheet having 200-300 rows with 6-7 coumns and shared to 25+ users. But, at any point of time not more than 2-3 people will view/edit the documents.

Here's the problem, the document is always unusable meaning any single click from loading a doc., switching to another sheet, edit, save, share, etc., took 100% CPU and depends upon the operation it stayed for 2-8 mins approx.

For eg., Clicking the "Feedback" link tried to open a new window which was blocked by the pop-up blocker, that shows a top menu to allow, that makes the complte sheet to repaint which took around 10 min, as it occupies 100% CPU.

Any application that responds bit slower is even acceptable at cases, but occupying 100% CPU and make the system "unusable" for a period of time for every operation, makes annoying, irritating and rethink like do we need such a collaboration at all.? Bad !

If you want to see it, I'll share the document and you can check it out. (else, load any such document and see the issue)

I'm using IE6 on Win XP, but the behaviour is same in any OS/browser.

Pandya !

smiledreamz