Sugel Perez Contreras

That may be, but this release, 1.18 pre1, was totally unplayable for me until I increased the memory allocation from the default 2GB to 16GB. Before that it would choke badly at every autosave and nearly always crash while the autosave was in progress. I do not see how these issues are not related. Also this was a problem for save and exit as well. No form of saving the game did not lead to crash and burn. After increasing memory allocation I don't even experience lag on autosave.

I have discovered something that may help. I was having this issue consistently then I modified the installation for 1.18 pre-1 in the launcher to change memory allocation from 2GB (default) to 16GB. I now no longer experience crashes or severe lag spikes (actually performance has improved dramatically). My machine has 64GB of RAM so I could easily spare it. While running the game it shows sometimes up to 55% memory usage (of the 16GB now allocated). This is effected also by view distance which I have set to 32 chunks currently.