The Exynos 990 is having a rough ride of it currently. Not only did Samsung snub the chipset for its home market, but there has also been a slew of reports about a flurry of issues affecting the Galaxy S20 Ultra. With complaints about the Exynos 990 version of the device piling up online, it now seems that the US$1,400 flagship can no longer run Pokémon Go, either.
https://www.notebookcheck.net/Fans-pile-on-Samsung-about-Galaxy-S20-Ultra-issues.461229.0.html