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Thanks Ivo!

Just to add on, colab is weird and not performant, this PR outlines our attempts to get jupyter-rfb working on colab: https://github.com/vispy/jupyter_rfb/pull/77

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Thanks. Yeah I've been baffled as to why just interactive Matplotlib with a Colab kernel is so slow. The Colab CPU is fast (enough), the network is fast, I haven't been able to figure out where the bottleneck is either.

I just remembered, I think there is something weird with Google's servers or the network because performance was very poor even with a custom Google Cloud instance running jupyterlab, see this: https://github.com/vispy/jupyter_rfb/issues/95#issuecomment-...

Is google colab slower than an equivalently powerful kernel running on a remote jupyter kernel? Are you running into network problems, or is it something specific to colab?

I just commented above, see this: https://github.com/vispy/jupyter_rfb/issues/95#issuecomment-...

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