Problem in using ladybug tools to run analysis on heavy files

I am having an issue with Rhino 8 3D on trial version. Whenever I am running any analysis, such as view analysis, direct sun study or solar incident on Grasshopper, it is not running (‘not responding’) and taking a lot of time. The Rhino model I am using is around 13 MB. However, I tried the same analysis and same grasshopper file using a smaller Rhino model around 442 KB and it is working. Can anyone please suggest a potential solution on the issue I am having?