UIWebView is very slow with JS

Number:rdar://32128750 Date Originated:11/05/2017
Status:Open Resolved:
Product:iOS + SDK Product Version:
Classification: Reproducible:
A webpage made with a certain quantity of JS is very slow to be loaded (about 40 seconds) with UIWebView when it takes only 4 seconds with WKWebView. 
Also, during the UIWebView loading, we've seen that a request is made to pancake.apple.com and takes about 31 seconds. Is this linked to the issue ?


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