Thanks all for your input. The removed card was an Nvidia 710, replaced by a 1650 Super, and he only so far has played Warzone.
It’s academic, though, as PCS have issued a refund. It was a moral boost to hear your comments though, thanks again
I’m new to this, just got my sons gaming machine. Despite asking for build help when I ordered, the £32 graphics card configured turned out not to be fit for purpose on the games I stated my son plays. On PCS advice I bit the bullet and upgraded to Suitable Nvidia replacement, and paid an extra...