I experience this regularly. 

I have found that leaving these larger notebooks open in chrome can cause lag to grow worse over time. Sometimes I can bring lag back down to a manageable level by closing the tab completely and loading the notebook from a new tab. Clearing output does not seem to help, so like your colleagues I’ll sometimes resort to splitting to a separate notebook. 

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On Tue, Sep 12, 2017 at 4:39 PM Ruslan Dautkhanov

<
mailto:Ruslan Dautkhanov <[EMAIL PROTECTED]>
> wrote:

a, pre, code, a:link, body { word-wrap: break-word !important; }

Mid-size notebooks lag in browser rendering / responding to simple navigation requests. 

I've seen many times that once notebooks grow up above a "small" size, rendering lags can happen.

Running latest Chrome with a decent Intel i7 processor. 

For example, a notebook I am working on has around 35 paragraphs and is just 145k note.json

(there are no big data tables - nothhing crazy), starts lagging quite a bit which doesn't help with UX.

I've noticed paragraphs in HTML code can be burried 10 levels deep in DIV-DIV-... nesting.

This could be the root cause? Browser might have hard time calculating all those nested 

CSS styles etc?

I know some colleagues of mine start splitting notebooks into separate notebooks 

when they see this issue.

Not sure if this is a known issue and if everybody else experience the same?
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