LiveCode Forums.

Hello everyone, I am making an app using LiveCode with quite a lot of controls (buttons, fields…). When the number of controls increases, the app shows signs of slowing down, especially when resizing the window. Does anyone have experience optimizing performance or best practices in this case that can help me?

Hi Jeff,

welcome to the forum!

Hm, hard to tell from afar without more info.
What platform, what version of LC, how many controls do you have and what kind are these(images or text or...)


Best

Klaus

Klaus makes a point, but I was intrigued.

I made a new stack with 4100 controls. Buttons, fields, graphics and sliders. I resized the card and did notice a "jumpiness" in that process. Reducing the number of controls to 2000, still left a similar but smaller effect. Down to 1500 and the effect was not perfectly smooth, but only you and I would notice.

Klaus, you can join this exclusive club if you want.

So how many controls are you thinking of, though I do not think there is a way out of this. Certain system messages are sent during resizing, but I do not know if that matters.

Craig

Resizing aside, what do you mean when you say

the app shows signs of slowing down

Craig

Ask Marvin the Paranoid Android.
- -
I am always suspicious of first-time posters who appear to want to run a Marathon before they have learnt to crawl.

Richmond.

Maybe, but I think not.

I would have bet a dollar that one would notice a difference in "movement" when resizing a card with very many controls, but only a dollar. An AI bot would have to have quite a sense, at least as good as mine, of LC and both its workings and its feel, to compose that post.

Bet a dollar?

Craig

Sorry: No dollars round these parts (well, I do have some of that plastic play money in my EFL school): only Bulgarian Leva which, from January 1, 2026 are going to be obsolete as we will have Euros (Cheers, cheers).

But there does seem to be a 'small plethora' of first-time posters just now with relatively complex questions.

jeffreestar wrote: ↑

Wed Oct 01, 2025 9:57 am

Hello everyone, I am making an app using LiveCode with quite a lot of controls (buttons, fields…). When the number of controls increases, the app shows signs of slowing down, especially when resizing the window. Does anyone have experience optimizing performance or best practices in this case that can help me?

How many objects are on your card?