Router speed problems

Small_Tarzan

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Sep 24, 2015
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I got a router: SMCWBR14 (Yeah, it is old)

And I got connected to it 4 PCs. 1 by LAN cable, 3 by wireless.

When I am on lan, my speeds are normal. (8MB/s)

But when I am connected from an other PC (notebook in this case) My speed is like 800kb/s.

I have no idea why, it happend from second to another. From 3MB/s to 800kb/s.

Any ideas, what can I do?