2016-01-15 21:53 GMT+01:00 Hilaire <hilaire@drgeo.eu>:

It depends on what you are doing in a step, but 1s step should not hurt.
May be the problem is somewhere else.
With DrGeo, I noted Athens is faster to BitBlt with bitmap operations
(in my case, only scaling and displaying a From in a DrGeo canvas).
Also, do your bitmaps come with 32 bits depth?

I suspect Rubric.

Old pharo withouth Rubric in Nautilus
-> ~ 0.5 %

Current Pharo with Rubric in Nautilus
-> ~ 10 %

both with a fresh image and only one Nautilus window open.

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