OK … just need to say Steinberg support absolutely rock solid!
After a screenshare turns out the buffer size on the MR816X ASIO driver was set to something weird like 1886 … after changing it to 512 it all works great!
So glad it’s not a faulty hardware!
Thank you Soul-Burn and NPW for your help … you guys also rock!
Thanks NPW for the offer of team viewer session … that was going to be my next step!
Right … off to actually make some music now!