I tested it on 2 PC's
PC-1
Intel Pentium M750
Intel 910GML
512mb
50gb 5400rpm 2,5
Windows XP i586
PC-2
Intel Pentium n3530
4gb ddr3
Intel HD Graphics Bay Trail
500gb 5400rpm 2,5
Windows 8.1 64bit
They are always on PC1
And rarely on PC2
No resource pack i also tested 8x8 decrased default
The unable to fit
Lava flow 32x32 i caused by to low ram
But unable to fit missingno is completly another thing they are no have nothing with ram but have a strange relation with Java Versions or Java Update and
Error is when launching game
It from 1.7.10_1400 to actually latest release they are no this error on 1.7.10_13XX and down like 1.7.2 or 1.6.4
-----------What wrong----------
Minecraft works fine.
I installed few mods.
Minecraft stopped working.
I uninstalled all mods.
Minecraft still crashing.
I deleted .minecraft and reinstalled forge.
Minecraft still crashing.
https://pastebin.com/d34qeX5B Minecraft
-----------PC Specs----------
OS:Windows XP i386
GPU:Intel 910GML
CPU:Intel Pentium Dothan M750 1,86ghz
RAM:512mb