snapshot 1.14 19w02a lag issue

Hello Mojang!

I'm played 19w02a snaphsot. I love the update but there is a problem. My game is lags and after 15 minimutes playing the game crashes.  Please fix it. Thanks!

Tip: Change the game engine to Unity or Unreal or make an own game engine.

How to make the lag level lower?: Viev distance:10

                                                        Attack indicator:off

                                                         MIP:1

                                                          Max frame rate: 80

                                                            Entity shadows: on

I hope I helped in this problem a little bit.

And rememeber guys fix the lag some how.