Core V2 Connection Problems - How to Troubleshoot

I have a Core V2 with an nVidia 1660 card which I use with 4 different laptops (depending on who in the house has their laptop plugged into it). The most consistent thing is the inconsistency with connections and I would like to know if anyone has any advice on troubleshooting. Many of the problems are reported on other threads, but here is my list of what sometimes/often/rarely happens. I should say that I am not a gamer - I use this mostly for the extra performance from the GPU in multimonitor setups and the connectivity to USB and ethernet.

• Never recovers from sleep. Once a laptop has been in sleep mode it will never reconnect to the GPU without a restart. Plug and Play is broken
• Some laptops don't recognise the USB or GPU devices until after logged in to Windows, sometimes requiring disconnecting and reconnecting the cable
• Some laptops intermittently lose the ethernet connection. Troubleshooting it in Windows brings it back for a few moments, but then it drops out again. Others are perfectly fine
• Looking in Device Manager, the laptops might pull different drivers from Microsoft's Driver service, which may explain some of the behaviours. Razer support declined to provide any of the drivers, which may have helped me work around or test the issues. The internet has drivers, but not from sources I would consider trustworthy
• There is the occasional stutter in Windows performance with some of the laptops when running some applications. Hard to say why but the whole performance sometimes drops every few minutes for a few seconds, interrupting anything I'm doing.

I recently tried a Win11 upgrade on one laptop. That seems to have made things less reliable. I suspect there are some power management, registry settings or driver solutions I could try. Razer support has not been able to help. Does anyone have any guides or suggestions of what to try? PS. The power charge is always working - the cable is connected. Darren.