3D FlipBook - Resizing window spikes memory usage, leading to window reload or browser crash

Hi, if the user resizes the browser window while viewing a PDF in the Lightbox (even with the examples on the https://3dflipbook.net homepage), memory consumption of the tab spikes at least 1GB. If the user very slowly resizes the window over a few seconds without pausing, the memory usage can even increase from 500MB to 10GB.

I tested this on macOS 11.0.1 with Safari 14.0.1 and Chrome 86.