Need to isolate a Sky Stream streaming device on a WBE750?

Morning Brian,
Apologies as rang sky back Monday lunch in my lunch hour. Didn't go well. Ended virtually shouting at each other. Was same as first advisor wouldn't accept its their devices and blamed my WiFi/network as cause and retensions wouldn't send new devices out as same thing would happen again. I repeated 2 devices were wired and he tried to say it was my 5ghz down the cable! and at his end they showing as being on WiFi. 11.37am UK yesterday sky texted me asking for a feedback survey lol. Had forgotten get same via email after first call Tues last week. Had forgot my guest network was 5ghz too blush so last night changed that to 2.4ghz only too but it was a different ssid too btw. Kitchen device still stuttered within mins whilst having dinner at kitchen table. Parents had living room & kitchen TVs on terrestrial all day. Then 7.45pm I settled down to football on sky sports plus red button and it stuttered a couple of times in first half but also 3 times during game black screened will buffering circle then turned itself fully off and that was wired on living room device. Parents went out 7.15pm and returned 10.15pm. After their return it black screened for a few secs then came back on not turned off that time. I ended the call I'm cancelling as now down. He replier sorry my friend can't resolve over phone need a site visit to investigate. Not even bothering. But last night also read on virgin forum that their stream box which I have as got for £10 when got hub 5 approved also has issues but have not subscribed to any channels through it yet. Not wanting to now either. So researching other suppliers. As having both as suppliers for products at same time is an issue. Been on virgin since 2011 and had their cable TV uptill sky stream march 2023. Dad had satellite before that and I had sky satellite before him from 1995. Were single supply for broadband in our street until recently when openreach entered so it was virgin or dial up/ADSL Contracted to virgin till Oct 25 as had to resign march 23 to get hub 5 and £10 stream box at time was £35 activation fee for existing customers. Won't be renewing. They want full contract money to end early nearly £800 as of now so not an option. EE offered a Max of £300 to buy out our contract as a sweetener but still lumbered till end of may and need to sign 2 years with EE too. So researching suppliers for ISP too now. Blush.