Geekbench 5 stalls

I installed Geekbench 5 on a Dell XPS 13 9360 running W10 and achieved scores
CPU Single 909 Multi 1975
Compute 5299
Actually my real intention was to quantify the performance of my Dell 790 Optiplex which is quite astonishingly slow. (Much slower than I remember from its usage c. 2014 but I guess memeory can be deceptive.) Geekbench stalled at Histogram Equalisation and a web search reveals that this shortcoming is linked to the presence of NVIDIA drivers, known since at least 2016 and not resolved.
I am not able to upgrade the 790's drivers.
Can anybody recommend an alternative benchtester?
BTW Dell SupportAssist labours through its own assessments of the 790's h/w and reports no failures or breakages. I guess the machine just is to be considered very very slow .. .. .. against current performances.