Potential to be super effective

Ive enjoyed the game a lot, and play regularly, and while speed blocks and such are annoying, I can deal with that. HOWEVER, this last update broke all kinda of things, and even on foot I have all Pokémon disappearing from view and tracking for a good 30-60 seconds CONSTANTLY. Extremely frustrating, please fix!

Asrugan about Pokémon GO, v1.29.1