Apple problem over my wi-fi?

The two apple products i have which are ipad 4th gen and iphone 5 are running extremely slow over my home WI-fi but my Toshiba laptop and my girlfriends android phone are working as normal. My broadband speed is as normal too after doing a speed test on my laptop. I can't seem to figure this out any have any info on why this could be?

Added (1). Also both apple devices have been working fine until yesterday

I'd check the firewall on your router, some ports may be decreasing your broadband experience

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