Even with a decent ping and fps, TFT struggles to process the first carousel, and its common to not be able to pick any item. The first carousel should be AT LEAST 10s longer.
Incomplete teams are a complete bullshit. More than once, i noticed pings around me during the mob phase. I then realised that there was a TRIO in my game making strategies about holding my champions. Since the deck is shared, this is completely possible, and they even admitted.
I don't care if random people decide to hold the winning player's champions so he loose advantage. But coordinated duos/trios plotting is extremely coward and should not be possible.