chunk sometime have a problem in 1.14.2 pre-release 4

do you believe me ? I expect MOJANG to fix it ?

I correction to 9 chunks render distance cause of lag game without use any resource pack

Carts move very slowly and jerky. When I break blocks (maybe especially with the axe?) the block will disappear, then reappear, and if I wait a second or two without going on to another block, it will then disappear and finally register that it is broken. Cart travel takes more than 10x the usual amount of time and cutting down trees probably takes 6x the usual. 

You are probably experiencing very low TPS and huge lags, related to general problem here: https://bugs.mojang.com/browse/MC-138550