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Modeller responsivness really slow and lagging when selecting, moving items

I have been having this issue for some time now (even on the latest 64bit version). As I am documenting a process I would sometime need to re-organise the direction of the process flows, which often involves multiple selecting items and moving and aligning.

What has been plaguing this app for me is that sometimes the process is incredibly slow. Anyone can easily replicate this issue:

- Start with a blank model,

- Create 10 linked tasks in different places,

- Select them all,

- Press align horizontally,

- Press align vertically

Expect this last action to take around 40 seconds to complete. It also doesn't matter if it's vertically first then horizontally after, this is just an example to get the modeler to change a number of items at once - that amplifies the fact that it's quite slow per item in general.

If (let's assume) you performed the above steps and the align vertically was pressed by mistake, the undo function takes just as long.. I do not think that a time interval of nearly a minute and a half (+40 sec and + 40sec) in case of a mistaken button press is acceptable.

As for specs, I think these are more than enough:

OS Name Microsoft Windows 10 Enterprise

Version 10.0.16299 Build 16299

System Model HP EliteBook 840 G3

System Type x64-based PC

Processor Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2400 Mhz, 2 Core(s), 4 Logical Processor(s)

Installed Physical Memory (RAM) 8.00 GB

Any suggestion on how to solve this issue would be helpful.

Comments (21)


Dear users,

We invite you to download and install our latest Modeler version 3.4.1:

If the performance problems persist, please let us know immediately through a comment in this same post.



By now we know that when you say "If", you mean that this issue was not tackled, and maybe by coincidence it was resolved.

With support like this, I am not surprised why nobody bothered to follow up, presumably (like me) they moved on to other, better solutions and stopped investing time being your QA testers.

I am only replying now because I am clearing out my bookmarks and had this post there to track progress.



I have still same problem as guys said.

Lagging is random. Doesn´t meater if is some easy move or moving with big process. Very often delete somethink is imposible.

Bizagi version: (64x)

I´m now testing the aplication with interst buy it for our company and if doesn´t change in next version I need to fing different app.

Thank you for your reply.


This problem has existed now for 4 years - I have high end gaming PC and draggingan emlement basically crashes bizagi for ~30 seconds. (resize tasks or any other objects do the same)

HOW can this still be? This application has been here for ages and USABILITY should be priority nr 1!!!!

YES, i do have the latest version of the bizagi and you still cant fix ANY of the bugs reported by your users.