Edit > Preferences > Viewport and set Display > Texture to Low or Med. More importantly, disable Hardware OpenGL if you have an RTX 30xx or 40xx series card. R19’s OpenGL driver is too old for modern Ada Lovelace chips.If you must use R19 on a Windows 11 machine, try these "features" to improve stability: Compatibility Mode : Right-click the Cinema 4D.exe Properties > Compatibility , and set it to run for Disable MPO
R19 runs at ~40–60% of modern performance due to CPU scheduling and GPU driver translation layers. cinema 4d r19 windows 11 upd
Within the NVIDIA Control Panel, set the Power Management Mode for Cinema 4D to "Prefer maximum performance" to prevent the GPU from down-clocking during heavy viewport manipulation. 3. Handling Plugin Incompatibility Blog Title: From Legacy to Leading Edge: Running