Regarding the windows version, as stated I am the only one of us to have windows 11, I could see that causing problems since windows versions are always so much fun, but it begs the question of how do I solve said problems.
Now regarding the GPU we’ve now compared them extensively and a few things came up. First of all, my driver is ever so slightly later version, they have 31.0.15.1659 while I have 31.0.15.1740.
Secondly and probably more importantly, we all have 2 GPUs one the RTX A4000 and the other is actually integrated graphic chip of Intel(R) UHD Graphics that I have not noticed before (my apologies). I have 770 and they (both) have 630. Moreover, when viewed in System information → Display, they have their Nvidia as the first one displayed and intel second, but I have the intel first and Nvidia second, which I’m assuming is a matter of priority for the machine? To try and circumvent this I went to graphic settings and set unreal to use strictly the “High performance” setting AKA the Nvidia instead of the default “Let windows decide”. Unfortunately it did not work.