[Bug] SprayMesh Extended can freeze or crash if too many sprays load in the menu

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Addon name
SprayMesh Extended

Bug description
The spray selection menu can cause the game to freeze or crash if too many sprays are loaded.

To reproduce
Steps to reproduce the behavior:

1. Have a lot of sprays added in the spray menu (exact amount is unknown; could be dozens or even hundreds).
2. Open the SprayMesh menu.
3. Game freezes or crashes.

Reproducibility might depend on whether or not the user is using the x86-64 branch or not. Awesomium might be more prone to crashing.

Screenshots
N/A

Additional info
Originally reported by a user on the Steam workshop.

Exact cause isn't known, but it's probably the game going over its DHTML or render target limit.

[NanoAi]

A simple fix would be to only load images the player can see and unload the ones they can't. Simply replace the panels with a more optimized placeholder when they're not in view.

Alternatively that part of the menu can effectively be a web page with lazy loading/smart unloading images.