Game streams should show up under Past Streams on my Mixer account. I'm usually under two modes (Player Lock vs CPU -or- CPU/CPU) so that I can get a feel for the AI controlled players with a little user input testing.
There's a game up now where I'm in Player Lock at PG with the Rockets against the Nuggets last night. Both teams are ~75% finished in editing attributes/tendencies/playbooks, but I still haven't touched most of the sigs. That game was mostly a playbook test of the Play Types. There's an issue where only certain Play Types get called at the start/end of games and without them the AI runs the team's default Series. The Rockets had no Isolation or Guard Post Up Play Types set, therefore the game chose to run the Point series until the first substitution for CP3/Harden. They also ran it at the end of games where most teams in 2K19 choose to run Iso/Post for their stars.
Here's the direct link:
HOU/DEN - Player Lock PG