We recently reviewed the business system Latitude 14 5420 in depth. Particularly under prolonged load, the Core i5 performs better than average. The iGPU Intel Iris XE, on the other hand, is slow and does not reach the expected performance in our game benchmarks. However, the clickpad turns out to be the real buzzkill.
https://www.notebookcheck.net/Excellent-Core-i5-terrible-clickpad-Dell-Latitude-14-5420-review.595903.0.html