Imagebuttons causing lag when hovering

[MidnightREN]

So I'm trying to make a sort of overworld map in one of my games. I have the base layer of the map, and then the buildings on top as imagebuttons.

When my mouse drags over the buttons however, it takes them a long time to register and display the 'hover' version of the button, anywhere between 3/4ths of a second or up to 3 seconds in some extreme cases. I used imagebuttons for the game's main menu UI and those seem perfectly responsive, so I'm not sure what's causing this to lag.

I have a fairly good computer (RTX3080, 32gigs of ram), definitely nothing that would lag on something like this, so I doubt its hardware issues on my end.

The images were originally 1920x1080 to save time on fiddling with xpos and ypos and getting them to line up, but when I made the buttons much smaller to see if it helped, there was no difference in performance. Any ideas as to what i could be doing wrong?

Thank you.

[m_from_space]

Can you show us the code that defines those images and the code of the imagebuttons?

[MidnightREN]

imagebutton:
xpos 0
ypos 0
idle "images/mainpalacebuttonidle.png"
hover "images/mainpalacebuttonhover.png"
focus_mask True
action Jump("palacescene")

not sure why the indentation isnt working, but it's indented properly in the editor

[laure44]

I used to have some problems with focus_mask True, and have seem a lot of people getting issues with it as well. I don't have it anymore though, maybe a Renpy update solved it. Try turning focus_mask off and see if the problem persists

[Ocelot]

As laure44 said, focus_mask True wrecks perfomance if used with large images.

[MidnightREN]

It does complicated my process, but indeed turning off focus mask pretty much solves this issue. The issue being that the map is isometric so now selection is a bit weird. Oh well, I'll figure out a different solution to solve the extra area that's selectable, and make sure to not have isometric maps in any future games for sure.

Thank you all for your feedback

[Ocelot]

You can pass a function, which will figure out, if button is focused or not. Some simple math later, and you get a pretty good approximation of your displayable shape.