Problems with computer J1010

A few months ago, I bought a reComputer J1010, and today I turned it on for the first time, but I’m experiencing several issues with slowness. The letters take a long time to appear, programs run extremely slowly, everything is a problem. The RAM usage is usually around 1.6GB only when I run the terminal, and the CPU usage reaches 112% when I execute lightweight code. Additionally, it has spontaneously restarted three times while running a facial recognition script. What could be happening? Did I receive a defective reComputer J1010?

Maybe you can reflash the system again and see if things get better.
Jetpack 4.6.1 is recommended