What its all about?

After the Version "1.16.101.01" Everything just lags in game:

• Frame rate drops a lot
• Entities stutters
• inconsistent events (game delays, like shooting arrows is delayed a lot)  
  • when shooting projectiles, it takes time before the action is seen and happen
  • "Server time" on the debug texts show a big values of 40 and above(even becomes 100+)
• Some Exp. orbs cant be taken
• Some mobs freezes

It might be because of the new Render engine since 1.16.200