This crap happens in the default client or custom clients, it's not affected by the custom code.
After I crash first, I literally try to log back in 12 times and I keep crashing, I always need to ask someone else to port me back home cause the game will literally not let me log in, no matter what client/java version I use.
I checked my HDD using the S.M.A.R.T. diagnosis or whatever using CrystalDiskInfo, the HDD is fine
I checked my memory using Memtest86, the RAM are fine
I stress tested/benchmarked my GPU using Heaven Benchmark 4.0, my GPU is fine
I changed my Nvidia driver version 5 times
I reinstalled both java 8 and 11, tried using either one with the game
I removed any 32 bit version of java from my pc
I scanned my pc for any sort of malware using Malwarebytes, there are no malwares
I don't know what else to check. I didn't do any weird changes for this crap to happen all of a sudden and loftar told me he didn't make any render changes all of a sudden to make this happen.