## Link to GitHub Issue, if one exists
n/a
## Description of change
Turning on Image Resize feature completely tanks performance of Live2D
in some SDVX songs. Add a giant warning next to the UI.
On my system with RTX 4070, Sudden Death is normally a rock solid
120FPS, but drops to 30-40FPS when resizing is on.
* linear filter does not affect this at all
* window resize options also have no effect
It's really just rendering on a larger surface + calling `StretchRect`
that does this.
Additionally, hide the resolution swap option since it sees very low
usage & has potential gotchas likes this.