BIM Coordinator Program (INT) April 22, 2024

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

Multiple instances of AC18

Anonymous
Not applicable
When I use 2 instances of AC 18, both of the run very very slow, or freezes. Please help me, what is the problem ? In AC17 worked well, but in 18, not !
16 REPLIES 16
Barry Kelly
Moderator
Mac or PC?
What processor?
How much RAM?

Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Eduardo Rolon
Moderator
I usually keep two running without problems. Might be file size related.
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08

Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
another Moderator

Anonymous
Not applicable
ON PC ! It is not about processor or RAM i think. I have I7, 8 GB RAM. Every time i open the second instance (to copy something from another project) it freezes. Than I have to quit both ArchiCAD instances and open again one instance.
Ac 18 is the most buggy version i've seen ! Please make some updates.
Eduardo Rolon
Moderator
Main culprit on PC is the video card and usually video drivers.

Also there are cases with files that make AC slow down this is usually with migrated projects that were created with 16 or earlier.

Check if opening 2 brand new files in AC cause it to freeze.
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08

Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
another Moderator

David Collins
Advocate
I'm seeing the same problem in 18 and no previous problems in 17. Two instances of AC are dysfunctionally slow. One of the files is usually from 17 or earlier so this may be the issue. Seems to me I can hear the hard disk churning away in the background when I try to do this, maybe trying to create more virtual memory? Or something to do with that background file that keeps track of all the Priority Based Connections?
David Collins

Win10 64bit Intel i7 6700 3.40 Ghz, 32 Gb RAM, GeForce RTX 3070
AC 27.0 (4001 INT FULL)
Barry Kelly
Moderator
I have a little more RAM than both of you but I currently have open - Firefox, Internet Explorer, Outlook, Windows Explorer, Adobe PDF reader, 2 x Archicad 18, 3 x Archicad 17, 1 x Archicad 15 and 2 by Archicad 12 just for good measure.
18 still feels fast and responsive as if it was the only program open.
They are all only single residences (not huge commercial projects).

All the Archicads show I still have over 8GB of available RAM (except 12 which is showing 4.0 but that is as much as it can use anyway).
Available RAM can be seen in the right hand side of the Status bar if you have that turned on.

Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Barry Kelly
Moderator
Just to show they are all running at once and you can see the type of projects open in all versions.

Barry.
programs.jpg
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Anonymous
Not applicable
I had this problem while using a NVidia graphics card.
The problem was the Geforce Experience software that comes with the driver.
Uninstall it solved the problem.
Link
Graphisoft Partner
Graphisoft Partner
Perhaps it's the IPC problem mentioned here?

Cheers,
Link.
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