[Performance] Ldtk Editor is extremely taxing on the GPU

[BurgerBob]

Hello,

The editor seems extremely taxing on the GPU. I have an integrated GPU on a laptop, that surely throttles when on load, but it is a Gen11 Intel, it should be able to handle the editor IMO.

The GPU is at almost full utilization when scrolling an empty background:

Seems that these issues may be fill rate related, because it is much better when I make the window smaller.

Also, the editor reacts quite badly in term of timing when the GPU lags, it seems that it can sustain 30fps, but the input lag feels worse. Maybe there is something in the way timing is handled ...