WiFi breaks when transferring large file over LAN

Hi guys,My WiFi mostly behaves itself, however if I try to transfer a large file (The last one was ~1GB) over the LAN (standard SMB file copy), WiFi drops out. It gets roughly 30MB through before connectivity is lost.The WiFi continues to show as connected, but I cannot even ping my router.Only disconecting and reconnecting WiFi re-establishes the connection.Any idea what's up? (My router is the black 'home hub' style. I can't find any version information in it's admin panel.) (And before someone asks, no I'm not telling you the contents of the file as it isn't relevant. With the greatest of respect, if you just ask unrelated questions to pry, please don't waste everyones time.)

Didn't think of that, thanks. Great workaround.I'm going to call Sky, see if they have any firmware updates or other solution. Surely they wouldn't leave such a big knows issue unfixed. I'll report back with what they say. Edit:Just got off the phone from Sky technical support.This issue was first reported Nov/Dec 2014.The chap I spoke to does not know of a fix, or whether a fix is being worked on, or if a fix will ever be worked on.He has not way of contacting the development team to find out any of this information.He said firmware updates are pushed out to routers every now and again. He does not know when this is going to happen and does not have a way to notify about firmware updates installed on my router. (This terrifies me. Sky have a backdoor into my router and can install any code they wish, without even telling me what they changed/installed). There is no way to turn these auto-updates off either. Here's a key thing he did say though:He said he was not at liberty to provide my ADSL credentials, but if I chose to extract them from the router and install my own router instead, they would not have any problem with that.When I told him that this was against their TOS and they could terminate my contract for doing this, he went silent and just said "errr..." Allowing Sky, their subcontractors and anyone else they choose to install any code they wish to my router whenever they please and have free open access to my entire LAN is a total deal breaker for me. That router is getting unplugged today and I'm putting a new router on the credit card. I told tech support this. I said if they have a problem with that, let's go the legal route. I literally have a recorded call where they give me permission to install my own router. 

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