Run Zwift and see if the laptop can handle it. Then make a copy of Ultra.txt and rename the copy High.txt. Rename the file currently being used from above (High in this case) to something else such as High Orig or whatever. Then swap around some of Zwift’s config files located in ~/Library/Application Support/Zwift/data/configs/ In that folder, you’ll see txt files for the various graphics modes. In the case of my Macbook, it’s High as you can see in my previous post. To do so, first determine what mode Zwift is self-selecting by uploading a recent log file from an activity using the subject laptop to. It’s pretty easy to force Zwift to use a specific graphics mode on a Mac. Here’s a screenshot of their Graphics analysis. Your average frame rate is very good, your minimum frame rate is average, and your maximum frame rate is excellent. However, a high end discrete GPU, such as the Nvidia GeForce GTX 960 or AMD Radeon RX 480, is necessary to get the 14 (4K) resolution options. Unlike graphics profile, you can change the graphics resolution to whatever you want. The levels are 576 standard definition (SD), 750 iOS, 720 high definition (HD), 1080 full high definition (FHD), 1440 wide quad high definition (WQHD - 4 times as many pixels as 720 HD), 2160 ultra high definition (4K - 4 times as many pixels as 1080 FHD). Your resolution (picture frame size measured in the number of pixels in the vertical axis) is 1080 full high definition (FHD), which is the same as full HD television. A high end discrete GPU, such as the Nvidia GeForce GTX 960 or AMD Radeon RX 480, is necessary to get the Ultra profile. A mid level discrete GPU, such as the Nvidia GeForce GTX 750 Ti or AMD Radeon R9 200, is necessary to get the High profile. A low end discrete GPU, such as the Nvidia GeForce GT 650 or AMD Radeon R7 360 Series, is necessary to get the Medium profile. Graphics profile is automatically set by the game engine according to the capabilities of your graphics processing unit. The Ultra profile adds further realism by using nicer lighting, nicer shadows and additional polygons to give things more detail. The Medium and High profiles use higher quality effects for increased realism. The levels are Basic, Medium, High and Ultra. Your graphics profile (realism) is High, which is one level below the highest level. Frame rate is not factored into in the score because it is very subjective. The score is based on your graphics profile and resolution. Zwift is setting its High Graphics mode and is running very well with an average frame rate of 52 fps according to the website. I have it connected to a 52" Sony TV via HDMI and to a HRM, Quarq power meter & Tacx trainer via ANT+.
Yes, I’m running the new 15" Macbook pro touchbar with upgraded AMD Radeon Pro 460 graphics card.
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