If the EFI issue is indeed what caused the MacBook Pro with Retina display’s performance lag, it can easily be fixed by another EFI update that changes the temperature threshold when the CPU and GPU are supposed to be throttled. AppleInsider has reported that the processors used in the MacBook Pro are supposed to start throttling users once they hit 105 degrees Celsius, however, some users are reportedly seeing their GPU throttled when their MacBook’s CPU hits 80 degrees Celsius. What’s new in version 1. This update addresses an issue which, in rare cases, may limit the performance of the discrete graphics processor after a system wake or boot. You can check what EFI version your system is running by clicking on the Apple menu and selecting About This Mac > System Report > Hardware. EFI updates can control how hot a CPU can get before underclocking or throttling users this is why people are pointing fingers at Apple’s EFI update for causing the frame rate issue. This MacBook Pro Retina EFI Update update is recommended for MacBook Pro (Retina, 15-inch, late 2013) models with NVIDIA graphics. Processor Speed: 2.7 GHz Processor Type: Core i7 (I7-3820QM) System Bus Speed: 5 GT/s Cache Bus Speed: 2.7 GHz (Built-in) ROM/Firmware Type: EFI. EFI, or Extensible Firmware Interface, is a BIOS standard developed by Intel. The reported issues are caused by the MacBook Pro’s GPU and CPU being underclocked when hitting temperature thresholds that are apparently set very low. We’ve seen reports of decreased video frame rates when playing graphic-intensive games, waking from sleep or running Windows via Boot Camp. If you use a MacBook Pro 2018 with Touch Bar, you need macOS 10.13.6 or. According to the Apple Support Community forum, some 15-inch MacBook Pro with Retina display users are experiencing major graphic lag after updating their Macs to Apple’s MacBook Pro Retina EFI Update v1.0. If you use an iMac or iMac Pro 2017, you should have macOS 10.13.6 or later version.
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