Constantly disconnected after installing new Wi-Fi

Afternoon Grelier, I recall you tried to aid me last time: Connecting to WoW causes Wi-Fi Disconnect

I still had the same issue. My specs are:

  • Chassis & Display Optimus Series: 15.6" Matte Full HD 144Hz 45% NTSC LED Widescreen (1920x1080)

  • Processor (CPU) Intel® CoreTM i7 Six Core Processor 10750H (2.6GHz, 5GHz Turbo)

  • Memory (RAM) 16GB Corsair 2133MHz SODIMM DDR4 (2 x 8GB)

  • Graphics Card NVIDIA® GeForce® RTX 2060 - 6.0GB GDDR6 Video RAM - DirectX® 12.1

  • 1st Storage Drive 512GB PCS 2.5" SSD, SATA 6 Gb (520MB/R, 450MB/W)

  • Memory Card Reader Integrated 6 in 1 Card Reader (SD /Mini SD/ SDHC / SDXC / MMC / RSMMC)

  • AC Adaptor 1 x 180W AC Adaptor

  • Power Cable 1 x 1 Metre Cloverleaf UK Power Cable

  • Battery Optimus Series Detachable Lithium Ion Battery

  • Thermal Paste ARCTIC MX-4 EXTREME THERMAL CONDUCTIVITY COMPOUND

  • Sound Card 2 Channel High Def. Audio + SoundBlasterTM Cinema

  • Bluetooth & Wireless GIGABIT LAN & WIRELESS INTEL® Wi-Fi 6 AX200 (2.4 Gbps) + BT 5.0

  • USB/Thunderbolt Options 1 x USB 3.2 PORT (Type C) + 2 x USB 3.2 PORTS + 1 x USB 2.0 PORT

  • Keyboard Language MULTI COLOUR BACKLIT UK KEYBOARD

  • Operating System Windows 10 Home 64 Bit - inc. Single Licence [KUK-00001]

  • Operating System Language United Kingdom - English Language

  • Windows Recovery Media Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account

The laptop is only 3 years old, so should be compatible with 5Ghz. It is the same building and even the same wi-fi spot, and my wi-fi works fine using my mobile data. I’m assuming it’s an issue with the new router blocking packets but can’t find anything regarding it.