Trees causing lag
in minecraft 1.13 trees from a far distance will not go into low resolution mode causing lag. this was not the case in 1.12.
Created Issue:
Trees causing lag
in minecraft 1.13 trees from a far distance will not go into low resolution mode causing lag. this was not the case in 1.12.

There is no "low resolution mode." Are you trying to say mipmapping?
yes, the mipmapping levels seem to be more more intensive than they did in 1.12
I think they use linear mipmapping over the previous nearest
If this is still an issue in the latest version, please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report (minecraft/crash-reports/crash-<DATE>-client.txt) here.