In my scene I have a large number of splines (about 500), of wich a lot need to be redrawn - I replaced the original with another one, as PCG doesn’t recognize them as the new ones: The old one is deleted and I redraw a replacement.
Now it can take AGES if I delete a spline, or multiple. The editor becomes not responsive, CPU usage is minimal, memory usage in- and decreases minimal,. but the pagefiles are heavily accessed for reading. It seems the system is paging in constantly, nothing or hardly anything written: Page faults are maxed out, and the editor can run that way for tens of minutes. Killing the editor process - though deleted on screen - runs in the background reading the pagefiles, I presume to clean the paged memory pages, before it is terminated - but much faster than when stopped normally (a few minutes in stead of tens).
After restart I took a somewhat different approach: removed the spline mesh and deleted two splines one by one. The first one took over 10 minutes with the said activity, the second was almost instantly.
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