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Modeling
About Archicad's design tools, element connections, modeling concepts, etc.

AC15 - Very, very slow --- Fixed

Not applicable
I just started using AC15 (Win 7 64 bit, 12G RAM). I opened a project that was done in AC14 (64bit) and I find that AC15 takes an extremely long time to open the project and even longer to change the stories (> 20 mins)

There is a lot of disk activity and the memory usage hits 99%.

The same project is ok on AC14.

I have read a lots of posts on issues with AC15 but no one else appears to have this issue. What am I doing wrong?
13 REPLIES 13
Laszlo Nagy
Community Admin
That is interesting because by default that checkbox is not checked.

I even remember it being checked causing problems in previous versions.
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28
Not applicable
Ok, so I ensured that this was unchecked and then activated the Navigator Preview palette. Same slow behavior and I had to terminate AC15.
Laszlo Nagy
Community Admin
That's good, so Support will appreciate that you nailed the exact problem.
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28
Katalin Takacs
Graphisoft Alumni
We appreciate and thank you for the investigation, solitaire.
This issue has been entered to our defect database.

Best regards,
Katalin Takacs