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My biggest problem is that WKWebview on Mac just seems so slow compared to Chrome. I have a canvas in my application and it just doesn't seem to render as efficiently as it should or with ease as it does in Chrome. Does anyone experience similar issues?

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It might have to do with the retina settings that rescale after rendering. I had this issue when we were testing 3DC.io on some Macbooks. Play around with the scale and css a bit, there is some information on Stack Overflow if you search for canvas+retina.

Edit: Also check out devicePixelRatio, that might be causing the issue as well.

Ohh! That actually was it. My canvas was a very large size - like 1900x1200 and Safari drastically slowed down - I readjusted for it to only take page height and width and it works nicely again. Thanks!!

No problem. I think of it as collectively saving the mankind another 10 hours of debugging.

I've never experienced this. It sounds like you are hitting a bug, but more investigation would be needed to substantiate whether there is a real difference. Have you tried to make a test case? Please file a bug at feedbackassistant.apple.com with repro steps!

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