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« on: 2021-12-30, 17:13:22 »
While corona is the renderer, c4d is the program that corona runs on. So is c4d has flaws it will most likely effect any engine. However, some people have preferences on what version of c4d they use. if you update to 25 the UI will be changed and might effect your workflow for a while. Personally, I always use the most recent version and just adapt to the UI.
There could be numerous things causing this issue for you but my first thought would be to clean up temporary files, update drivers and windows if available, and update c4d.