Hi ,
I just wanted to let you know that in my personal case, the C4D projector shader is my main reason for the many IR crashes I have. With an AMD threadripper 64-cores and 256GB I hoped to work without problems using the IR on large scale projects, or again with upgrading 6 to 7, but it seems I finally found the actual problem which was the reason for crashes on both small and large projects.
I use a lot of furniture and decoration objects from designconnected.com in a subscription, but all the 3D-models have as a standard projector shaders in the materials. When I convert the c4d materials to corona (legacy) materials, the projector shaders are also included.
I easily had about 15 crashes a day when using IPR, until I recently cleaned up a project (that kept crashing instantly when starting the IR) from all projector shaders. This was a pretty time-consuming job to do with about 1000 materials to check all channels and nested fusion or layer shaders.
It took me a few crashes and restarting the checking over and over to eliminate all the projector shaders from the the project, but once done, I was sooooo relieved and impressed to be able to work an entire evening without crashes in that very same project... very stable at last.
With the next following projects I have the same results...
Maybe other people should check this too when they experience many crashes in IR.
I hope a solution for this problem will come with corona 8 or 7HF3 ;-D
best regards