HALLELUJAH!! I've fixed it!! Soooo to follow on from previous.....the Zyxel 8 x 2.5gb port switch started dropping out within 45min -90mins of connecting, Same with the TP-LINK, The QNAP 2x 10gb and 4 x 2.5gb port switch had the LEAST drop outs, it would drop out 4x roughly in a 24hr period. Now i had tried this PCI Nic..
https://www.amazon.co.uk/gp/product/B08V1HG47H/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 But not with every switch....wish i had....but hey ho, it got returned after dropping out on the original BrosTrend switch. NOW please remember throughout all of this .....there are 2 PCs connected to every switch....mine AND my brothers....HE HAs an Asus Z690 mobo with 2.5gb LAN port....he has NOT HAD ANY drop outs on any switch, switch/router combo, cables etc.. throughout this whole swapping and testing process, every time ive made a change on mine ive tested it on his and he just hasnt had any drop outs either way! Also, like anyone else i've been googling oogling my brain out....saw a brief thread somewhere where someone purchased a 10gbps PCI-e nic specifically a NICGIGA branded one to solve their drop outs on a 1gb LAN port, can't remember which motherboard, anyhoooo....back to amazon we go....NICGIGA 10gb pci nic comes from US so will take 2 weeks to deliver....so i order that but the NICGIGA 2.5gb nic is available for next day delivery.....so i thought....lets give it a go just for the heck of it, at this point i'll try anything! That turned up on Tues/Wed. Connected it up today ran pings for 5hrs....NO DROP OUTS!!
ONce again...just to rewind a little bit....My original Cat6 cable was 20m or so....only needed 10 but kept the excess rolled up under the desk for eventualities like these! And it came in handy, we plugged my brothers PC into my wall socket (hes only in the room next door)....NO DROP OUTS!! Also, i had my doubts about the cabling in the walls being an issue, it was all done when we had the house refurbished in 2019, all off the same reel, if i had an issue it was likely he would have had an issue. So i then ran the cable from my PC straight to the switch and this is when my drop outs would stop (in 2.5gb full duplex mode). However, if connected to my own wall jack/RJ45 port i could stop drop outs by running in 1gb full duplex.
So it was handy having a 2nd PC that is soooo reliable to test different components/combos etc. throughout this whole process. IN THE END...........THE NICGIGA 2.5gb PCI-E NIC has resolved the issue! I will keep testing....and then when the 10gb one turns up, will switch to that and test....but its looking like the 10gb one will be going back as it is £100 vs the 2.5gb £21, however i'm tempted as the QNAP switch has 10gb ports and i could make use of it although i most definitely dont need 10gb LOL
https://www.amazon.co.uk/gp/product/B0BFPWSMV2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
https://www.amazon.co.uk/dp/B09HGRK5XB?psc=1&ref=ppx_yo2ov_dt_b_product_details (THE LIFE SAVER!)
Sorry forgot to mention i am currently back on the EE SMART HUB PLUS router. The TP LINK ARcHER is still on back order and will be delivered by the 20th or so.....so im prayign everything still works once that arrives and is all set up and connected! Of course i will keep you all posted on my findings! I've never had a connectivity issue like this in my life, this is like my 8th PC build in my life, never experienced anything like it!