If you are using the tablet for navigation in a car (sun on the screen) or heavy downloading, the device will thermal throttle. You will feel the backplate get hot, and the interface will slow down to protect itself.
The UMS512 Deep Dive: Is UNISOC’s Workhorse Good Enough in 2024?
The biggest issue with the UMS512 is the 12nm manufacturing process . Compared to modern chips (like the Snapdragon 680 on 6nm), this chip runs warm.