New router breaks discord and generally bad connection

[DL7274]

I recently swapped to EE WIFI after a long period with BT where they were constantly throttling my download speeds to roughly 5% of what i paid for. After the swap I installed a new smart hub 2 which the phone representative I spoke with insisted was better than my previous router, the router however instantly broke Discord and many games that I play through steam on my computer. There's constant rubber banding and I just can't use discord at all. I spoke with another representative and after getting a new router and a week later a WIFI booster to try to fix the issue it has only gotten worse with the general connection being run into the floor. For claiming that the service is a great choice for gamers EE have done starkly little research about how their hardware affects actual software gamers use. 
Does anyone have any fixes for my problems, I've done some research and found some spotty information that the issues that I'm facing have something to do with the variable IP model that new EE routers use where you can also share an IP with other users in the area, I've also heard varying information about whether I can call them up to get a fixed IP or not.
Overall extremely disappointed with the service so far given as it basically can't even handle uploading an image to a chat let alone streaming a game, which I was able to do fine on my older (and apparently antiquated) BT fixed IP router without the use of an internet booster.

[XRaySpeX]

What Smart Hub 2? You mean BT's? EE doesn't have 1.

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@DL7274 wrote:

something to do with the variable IP model that new EE routers use where you can also share an IP with other users in the area,

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That's on the mobile network, not fixed BB.

You can't get a fixed public IP from EE.

[DL7274]

Yes my mistake, it's a smart hub sh32b, thats what it says on the bottom. 

[JimM11]

@DL7274 What BT Router did you have before the BT to EE Migration?

[DL7274]

I actually misremembered the router i have now, I used to have a BT Smart Hub 2 and i now have an EE smart hub SH32B

[JimM11]

@DL7274 The BT Smarthub2 router will work fine on the EE Service. Can you put it back on!?

[DL7274]

I may be able to yes, just hoping that someone in my household hasn't thrown it out. I was not aware that it would work with my new internet plan, hoping that'll fix the issue. Thanks for the info.

[DL7274]

It's gone apparently. Would you know if i could just order a new SmartHub 2 off the internet and use it?

[JimM11]

@DL7274 The new EE Smarthub+ router is broken with regards to the upnp feature, therefore port forwarding if needed would have to be setup as required if the applications need, you will have to research what any requirements are for the applications. HTH

[XRaySpeX]

They better not have thrown it out. BT will want it back or fine you £50.