Hi, I've been having a problem for a few days that I think is related to OpenGL. The full body analysis model screen gets stuck. Even the right-click menu comes up after 1 minute. When I switch to the solid model, there is no problem, it flows like butter. I am sure that the performance of the computer is sufficient. Namely, Business computer: i5 6500 + 16 GB RAM + SSD (Windows 10 build 1607, latest video card driver installed from Intel, OpenGL 4.4) Laptop: Core 2 Duo P8600 + 4 GB RAM + HDD + Nvidia GeForce 9600 GS (Windows 10 build 1511, video card driver not even up to date) 8.103 on laptop I have ideCAD Steel DEMO with version number installed and I don't have any problems as I show in the video below. I have 8.503 Reinforced Concrete installed on my work computer and I'm having problems. To be sure, I installed the Nvidia GTX 275 graphics card, installed the latest drivers and tried again My image and the result still did not change, the mesh model I made semi-rigid diaphragm solution freezes. It is certain that the problem is caused by OpenGL. Can ideCAD support team help with this? If there are friends with similar problems, I would like their help. Video: