Possible reasons: 1, low memory. 2. The graphics card model is too old. Solution: Use layered rendering method. Reduce the number of faces, bumps, etc. of secondary objects. Use normal map to realize model details and reduce the number of faces. To upgrade the hardware, different situations need different methods, which need to be explored slowly.

When using 3dmax to render a model, 3dmax automatically limits the memory used. If the memory allocation is insufficient, it will cause the rendering to get stuck or crash.

On the setting page of Vray renderer, find the dynamic memory limit, and set the memory value allocated to 3dmax to 8000 or above or directly to 0. If it is set to 0, it is equivalent to not setting the dynamic memory upper limit, so that it will not get stuck or crash as soon as rendering. In addition to memory, 3dmax will bring a lot of CPU load when rendering. If the CPU load is too large, it will also cause the rendering to get stuck or crash. If the CPU is overloaded, the temperature will rise. At this time, we can cool the CPU, remove dust, remove oil or replace the fan to make the rendering go smoothly.