@kalban said:
So i tested it now with a new template, made from one of SU default templates. Problem still exist.
So i'm guessing next step is to look at extensions, and see if one of them are to blame.
Do that, yes.
Sometimes one has no option other than to manually search for an item which is to blame.
1. Last week for example I experienced a weird behaviour within one file made with some graphics editor program. I made 10-15 files each 50-100 MB heavy (which my computer can work with). But one of them had only about 30 MB and four pages (for printing). Unlike others which could be opened in a few seconds this one always took several minutes. Weird. And when editing one of those pages - I got a terrible slowdown. Just one of those pages.
I couldn't find any solution online.
It looked as that page somehow restricted amount of RAM asigned to the file. Or who knows what.
Anyway, things were settled out this way: I created a fresh file. Made four pages, copied items from problematic file one by one or grouped. And when I started copied items from the problematic page all were copied with no problem except one small jpg image.
Just imagine, 600x400px 100KB image didn't behave nicely, but instead created huge problems and slowed me down considerably.
So instead of copied it from that file, I found it on my computer, imported into the new file, resized it there, placed as it should be and that was it.
Now that file and everything in it behave normally.
No weird acting anymore.
So sometimes even something really small can cause big problems.
2. Or look what happened to me once when working with some face-me trees in SketchUp:
https://sketchucation.com/forums/viewtopic.php?f=15&t=63003
During rotation - some trees rotated normally, but some didn't. No one exactly knew why - but eventually, I exploded that tree species component and made a fresh face-me component from exploded parts, put component instances in correct places (luckily I had marks) and now all of them behaved like good guys this time. Exploding and reasembling helped in my case.
3. I hope you will find the guilty guy in your case soon.
And tell us what was it.