I opened and modified an AS this morning of 25,000 parts also without problems and on the same version with a graphics card that is no longer recommended for the 2023 version (following upgrade of sw2020.)
Transparent plexiglass style parts in your AS?
It happens that in large assemblies it bugs if too many parts are transparent.
Even if you are very far from a big assembly for me!
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I won't be able to test all this this weekend (holidays oblige 
) But I'll keep you posted!
Thank you very much for all these leads!
Yes but for me they are big steel parts, it's mega heavy!! 
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Still, we shouldn't have to worry about this kind of in the age of 
AI and all the promises of evolution, if you know what I mean gentlemen at DS.
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The problem is that no one installs before SP4 or 5 anymore so we end up with Sp4 or 5 completely corrupted more and more often.
Thank you to everyone for installing the versions from SP0, so that I can enjoy an SP5 free of any bugs! 
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