I get this on test Unity too, memory short for web open GL also I have had shortage of memory for Java, they need to add more memory for the game.
It happens on both Browsers I use Edge and Chrome. The shortage of memory comes up most for web open GL, hopefully more memory will be added so the game can be tested better.
It takes longer now then at the start of testing to load, I get green isle followed by paths then skeletons of buildings till they finally fully appear. Memory and a lot of timing issues I think, but I'm not a programmer, pleased to see the animation of my Mechanical Man in Excelsior as he throws my well earned crystals in his Tummy, I really miss the animation of Excelsior in the Client. name in test server sandie uk using win10 pro 64 bit.