The throttle was not lifted in 11.3. They added a switch so users could disable it. https://www.theverge.com/2018/2/7/16984234/how-to-iphone-throttling-ios-11-

The throttle was not lifted in 11.3. They added a switch so users could disable it. https://www.theverge.com/2018/2/7/16984234/how-to-iphone-throttling-ios-11-3 https://www.theverge.com/2018/2/7/16984234/how-to-iphone-thr...