Ollie Nilsson

I have no clue what could be causing this.
If more people have this problem they should tell us.
It'll help to find the cause of this problem.

What is your specs? (CPU, GPU, HDD read/write speed if possible)

EDIT:
Does this happen on previous versions?

Have you tried updating java/LWGJL?

Never heard of a 5 minute long load time.

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