Likely it was caused by your computer and browser not playing nice with x265 hardware decoding, I used to run the gamelet on the same network as my desktop and

Likely it was caused by your computer and browser not playing nice with x265 hardware decoding, I used to run the gamelet on the same network as my desktop and would get the same on some configurations. Frustratingly, it was not easy to know at a glance that this was what was happening, but there were times (many times, actually) where my chromecast ultra at home was performing much better with Stadia than my gaming PC