Fennec: https://perfht.ml/2Tn79w5 Fenix: https://perfht.ml/2vg3ick There profiles were taken on Pixel 3. Based on these 2 profiles, there was a 470ms gap between the request is finished to the first paint, and it was only 30ms in Fennec. Looks like the delay was due the first composite took 420ms in Fenix.
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Fennec: https://perfht.ml/2Tn79w5 Fenix: https://perfht.ml/2vg3ick There profiles were taken on Pixel 3. Based on these 2 profiles, there was a 470ms gap between the www.google.com request is finished to the first paint, and it was only 30ms in Fennec. Looks like the delay was due the first composite took 420ms in Fenix.