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When my files get around 190 MB big the performance gets slow. Especially when using dynotopology. It starts lagging and sculpting won´t work in real time. Isn´t 8GB RAM enough? Is my Mac already to old? I can´t imagine how Games with graphics like Starcraft 2 can be displayed while blender gets slow at such comparably small files. Is there maybe a way to involve the NVIDIA GeForce GT (if it isn´t already) manually or something?

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You can check to make sure the Nvidia GPU is enabled when you run Blender by looking at Activities Monitor. Graphics Card should say 'High Perf.' enter image description here If you don't see the Graphics Card line (as the case with most non-laptops), your system is already using the fastest GPU available.

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  • $\begingroup$ Hm, how did you make Graphics Card appear in that menue plz? I just have Energy Impact in mine... $\endgroup$ – Irenäus Blaszkiewicz Feb 16 '18 at 22:00
  • $\begingroup$ In User Prefernces it also says OpenCL not CUDA as recommended on the net. I don´t have acces to CUDA do I with my current graphics card? $\endgroup$ – Irenäus Blaszkiewicz Feb 16 '18 at 22:23
  • $\begingroup$ Added to answer. CUDA and OpenCL is only used for rendering, it will not have an impact on viewport performance. Also, it seems like CUDA is not available on High Sierra yet: devtalk.nvidia.com/default/topic/1026455/… $\endgroup$ – Mike Pan Feb 16 '18 at 22:42

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