Video issue or?

What is the video thing with nature taking over every inter- and cross section in Zwift. Every time i pass a cross/inter section, the tarmac is gone and green gras is all over (or certain places in watopia, lava is all over)
In addition people and building seems to hang up in free air. This must be a video glitch or what? I use mac with the lates MacOS (13.5.2)
Anyone else who has this seen this?