Laggy graphics on Macbook Pro

Hi, I’ve recently noticed serious lag and frames per second is probably about 2 now, I’m using Zwift on a mid 2014 Macbook Pro with Intel Iris Pro 1536mb graphics and 16gb ram. Has there been a recent update to zwift that my machine is now struggling with?

The program start up and launch into watopia from menu screen is very slow as well, is this normal?

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