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Hi, thanks for your answer. I am using an iMac (Retina 5K, 27-inch, Mid 2015) with the following specs.
3,3 GHz Intel Core i5
16 GB 1600 MHz DDR3
AMD Radeon R9 M290 2048 MB
Usually XP11 runs smooth on this system except when I am loading the FF767-200 or 767F. The framerate drops when I switch to the outside view. When I load the FF 767-300 everything is okay, no framerate drops in the outside view.
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