Nesting More Than Two Sequences Deep Causes Long Hangs
My workflow calls for multiple nests in a project, and at the third nest deep Premiere becomes unusable. Here is an example of my workflow:
1 - Nested Splitscreen
2 - Nested Stabilization
3 - Nested Camera with Chromakey/Color Correction
Premiere is fine with the first two layers of nests, but even clicking in to the third to work takes 15 minutes or more. Working on windows 10 I get a total software hang for every click inside of the 3rd sequence. It takes an excruciatingly long time to deal with this layer as a result.
I see no reason why a sub-nest would hang so hard. Premiere does not seem to be using much of the CPU or ram when this happens. I have never had this problem, for instance, in After Effects, and I don't see how the changes I am making should be taking clock cycles.
Jim Simon commented
This has been a problem for years now. When nesting was first introduced, you could next 3, 4...5 layers deep without issue. Then things changed. You can nest A into B, but as soon as you nest B into C, things go weird. It's been that way for several full versions now.