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Is Graphisoft actively doing anything about the shocking graphics & input lag of ArchiCAD 27?

Paul King
Advisor

Under Windows 11, using a pretty high end Workstation with high end GPU with lots of gRAM, with even small residential scale projects, ArchiCAD 27 is still an absolute dog to use performance wise compared with earlier versions.

 

I could perhaps understand if this was a beta, or maybe a first release, but this issue has persisted through several updates.

 

Performance seems to get even worse when zoomed in, in both plan and 3D.  Sometimes literally seconds of lag occur - for example when holding shift while selecting (to constrain movement direction). in reasonably simple contexts without lots of objects on screen.  Hotspots are offset from actual geometry in 3D when zoomed in even moderately close,.  in 2D windows, black linework visually thickens and changes colour to red depending on orientation - harking back 30 years to the the way lines would change appearance on old NTSC CRT monitors.

 

etc

 

Windows Task Manager often shows minimal CPU utilization while these lags are occurring, so my semi random guess is the bottleneck is in utilization of the GPU (despite its high specs) and is something to do with a poorly optimised OpenGL implementation

 

My reseller advised months ago that Graphisoft was aware of the issue - but things are still no better three versions/hotfixes later.   

Have GS lost most of their developers or just lost interest?

 

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop
15 REPLIES 15
Laszlo Nagy
Community Admin
Community Admin

A new Hotfix was released just today. Do you still have these issues with this latest Hotfix?:

 

https://community.graphisoft.com/t5/Graphisoft-Insights/Archicad-27-1-2-Hotfix-release/ba-p/584223

 

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-Ac27

Hi Laszlo.  Yes, just updated to hotfix 27.1.2, and issue still seem to occur.

I also updated to latest NVIDIA driver, but also made no difference.

 

Hard to show the lag, but here is an example of displaced hotspots with a selected element

 

PaulKing_0-1705596726274.png

 

I can't seem to screen capture the issue of lines changing apparent weight and colour depending on orientation - only visible on screen within an ArchiCAD window - issue disappears when screen capture pasted into any other window.

PaulKing_1-1705596966017.png

 

 

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop

Is this update supposed to fix graphics performance issues for Windows? 

Although there is a download for Windows the announcement refers to Mac specifically 

 

There are also other posts related to a 0,5 second white screen flashing when moving between tabs.

The registry fix which activates the previous rendering OPENGL API elimininates all this problems which means that the transition to the DirectX is not optimized yet.

 

Greetings! 

Botonis Botonakis
Civil Engineer, Enviromental Design MSc., BIM Manager for BS ArhitectsVR
Company or personal website
Archicad 27. Windows 11. Intel Xeon 2699x2,64 GB RAM, Nvidia 3080Ti. 2 Monitors.

If the Registry fix is the same as the one noted here for ArchiCAD 26? https://community.graphisoft.com/t5/Installation-update/Archicad-26-and-DPI-issue-on-4K-monitors-und..., it does seem to help with the linework issue and a little bit with the selection lag issue (often still pretty bad), but unfortunately makes no difference to the offset selection node issues I am experiencing.

 

A new issue is created however - the bottom of the ArchiCAD application window is then masked by the Windows taskbar if the window is set to full extents using the ArchiCAD window maximise gadget.  Long drop down menus disappear off the bottom of the visible portion of the window, meaning that there is no way to access items at the bottom of the menu, even using the menu scroll bar - unless I set the Windows task bar to hidden (something I prefer not to do as it interferes with task bar notifications, clock etc)

 

 

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop

The hotspot issue - is that an object or just a basic Archicad element (wall or beam)?

If it is an object, the hotspots may be scripted incorrectly?

 

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

Hi, no, that example is actually just  a tall thin piece of slab, 

Same offset issue applies to all entitles, basic or scripted.  Not very noticeable when zoomed out, but a real problem if trying to do fine adjustments zoomed in

 

I notice the dynamic feedback display linework is also pretty janky while editing.  Almost as if there is some sort of rounding error associated with a far distant project origin that affects just the dynamic feedback display, but not the ordinary model geometry display.  However in this case the project origin is close by.

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop

A further issue just noted after applying the registry 'fix' is that when selecting elements like beams, for which there are many stored profile options available , the cursor will sometimes (but not always) freeze and flicker for a few seconds, along with the associated object type drop down menu icon in the top header bar in the window (this flickers simultaneously. though does not actually drop down) 

This is without actually changing any object parameters or explicitly trying to invoke that drop down menu.

 

 

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop

Hi Paul

 

In the next release of Archicad due out in February 2024, the known bug DEF - 16662 which we believe affects your issue, has been repaired in release 27.2.0 .

Great ! - will give this a try when released, and report back.

Hopefully the serious input lag issues generally have also been addressed? 

PAUL KING | https://www.prime.net.nz
ArchiCAD 8-27 | Twinmotion 2023
Windoze 11 PC | Intel Core i9 10900K | Nvidia Gforce RTX 3080 | 32 Gb DDR3 | 2x4K monitor extended desktop
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