Steps To Reproduce: 0. Reduce browser height 800-900px 1. Open https://cyanharlow.github.io/purecss-francine/ 2. Wait for render the page 3. Try scroll up and down with mouse wheel or scroll thumb Actual Results: It is laggy when WebRender is enabled
OS: Windows 10 → All
Priority: -- → P2
This is slow even with the patches from bug 1457466, because rendering is slow. https://perfht.ml/2JVzsLR
This is a pretty malicious test case. I don't think we need to block nightly on it.
Summary: laggy scroll on heavy css page → laggy scroll on heavy css page (purecss-francine)
We need to decide how good we need to be at this for release. Let's talk about this next Wednesday.
Status: NEW → RESOLVED
Closed: 6 months ago
Resolution: --- → FIXED
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