When I use very large images, the performance loss is severe. Even when I use a dedicated GPU, the FPS remains at 20. Could we consider some kind of dynamic loading/viewport culling technology? If that's not possible, we could automatically generate a fragmented image group cache. Even if I select a huge image, after selecting it, it will automatically be split into multiple smaller images and cached in a specific folder. Subsequent game loads come from the cache instead of a single huge PNG, thus achieving dynamic loading.

Yeah, a super large image, let's say like 4k, would decrease performance. This is a common issue with parallax mapping in RPG Maker. I do want to do more research about optimizing this. Can you send me your parallax images via direct message on my Discord channel? I'd love to test it myself.

Update: After working via direct message, we've detected the issue was due to another plugin. I'll mark this as Solved.

Sorry, this was a misunderstanding. In fact, the problem was caused by me enabling some plugins that had duplicate functions.