Hi I recently installed the black ops 3 mod tools on my pc and when i try to map in radiant it doesn't respond sometimes if i move a brush or place model in , also the textures and models take a long time to load.
In the task manager it uses up 75 % and more of my cpu and a very similar story with my ram

my pc specs

CPU: amd A8-6600k
8gb ram
Graphics: Nvidia Geoforce GTX 960
Windows 7 Ultimate 64 bit

please help if you can i can run black ops 3 on it in 60fps on high settings.

Thank you for taking your time to read this 

add radiant in your graphics card:

1. Go to your NVIDIA-vonfigurationscreen.

2. Go to 3D-settings.

3. and than in general settings you want to set your preferred graphics processor to powerful NVIDIA processor.

4. than go to Program-settings also in the 3D-settings.

5. and add radiant in the list and select the powerful NVIDIA Processor.

and you are done!