Hello,
until now we only used the Unity Plugin for Houdini Engine. We are start using it for 3DS Max.
Unfortunately, on the PC of the artist that should use it, we experience some serious lags.
Not only with our own (very simple) tool, but also with the examples that come with the installation.
Very often it works fine for a couple of interactions, results are shown immediately after changing parameter values, but every couple of interactions (like changing a slider value or editing the underlying curve) the plugin (and Max) gets un-responsive for 20 to 30 seconds, which makes it more or less useless for us.

The PC in question has an Intel Core i5-7600K CPU, a Radeon Pro 580 Graphics Card and 40 GB RAM. Neither RAM, VRAM or usage or CPU power are anyway near their maximum, according to the task manager.
We’re using Houdini 18.5.563 and Max 2021.
On my own PC (with much lower specifications) I don’t have these lags.

Is there any way to find out/profile what may be the problem on his system?
Using the performance monitor in Houdini isn’t a big help here, since the problem doesn’t exist in Houdini itself.