Simply Minecraft was designed to work with 2 GB of RAM, but in some situations more RAM might improve performance, but it is not recommended in most cases.
The graphical effects used in Simply Minecraft while optimized for less powerful computers will slightly decrease performance. For older PC's where the framerate becomes unplayable it is recommended to remove Better Foliage, as doing so may significantly increase performance.
[b]Crash reports and logs should not be pasted as plain text. Please use a service like [url=http://pastebin.com]Pastebin[/url] to create a link to your full crash report and paste that link into the Discussion tab. [/b]
[b]Modpack bugs that aren't user specific and you suspect affect most users playing the modpack, please make an issue on the [url=https://github.com/Amaxter/Simply-Minecraft]GitHub[/url] with as much information as possible. User specific occurrences will be deleted, they likely belong in the Discussion tab.[/b]