This is a very old "trick", actually the only sensible workflow & absolutely fail-safe and fool-proof:
Every feature needs some kind of narrational structure, content-related. In a video, these are sequences of clips (f.k.a .
scenes) that form a unit, like, for instance, intro. Some of those chunks, chapters may be ten minutes long, but usually they are shorter. You could copy and past your completed 40 minutes -(in-out-ranges or use the timeline index) to new projects. If you can split the thing up into four projects (probably more), you won't have any problems.
Before stitching them together again in the final cut, the master project, you should individually render all, and there still will be no beachballs.
ponponpostprod wrote:
...most of time when i make some editing (sound level - copy/paste - trimming )...
Also, shut down windows you don't need at the time. If you don't need the browser, close it. If you just work with audio right now,
at least click smart collection audio only. Focus on the audio role you make changes to. It may be a minor speed improvement, but not having to generate waveforms for all audio lanes all the time affects CPU, GPU and RAM. And so forth. Many small things add up. Concentrate on the task at hand, this will really help.