True Fibre - New 4K Router Advice Please

[Lazy Sod]

Had True Fibre for a couple of years now, recently upgraded to much higher speed package to watch 4K Netflix streams.

 

I noticed the speed had not improved so called True.

 

A technician came and installed a new 'TurboBoost' router connected to the existing Huawei modem-router combo.

 

Came home to find I now had 3 wireless networks, one on the existing Huawei router, and two new ones on the TurboBoost router (2.4G and 5G).

 

The speed is up and down on the various wifi networks, sometimes 200mb, and sometimes only 10mb.

 

I've done a bit of research and it seems the technician should have put the existing Huawei router into bridge mode, but he clearly didn't because I still have a wifi network on that router. I also did some googling and discovered it's really complicated to change the Huawei router into bridge mode.

Would appreciate some advice...

1. Is it crazy and asking for trouble to have the wifi network on the existing Huawei modem-router combo still active when there is now 2 more wifi networks (2.4G and 5G) on the new router?

2. I can't put the Huawei router into bridge mode myself (very complicated), so would it help if I at least disable the wifi on that router?

[muratremix]

if you put 2 wireless device next to each other, they will work at very low wifi speed even if you choose a different channel.

you have to disable wireless in old device.

then set up DMZ to second device, so you dont need bridge mode.