When using the OperaGX browser, some high-definition videos cannot be played on Bilibili. For example, the following video can play normally at 360P and 480P, but cannot play properly at resolutions such as 720P, 1080P, and 4K, and will remain in the loading interface before the video is played.
https://www.bilibili.com/video/BV1km4y1W7ay
I have installed the latest version of Opera GX browser on three computers in my own home, and all of them have this issue. I tested Edge, Chrome, and Firefox, which can play normally in any definition using other browsers on these computers.