Also t480 - i5-8350u CPU.
My process was to update firmware with fwupd -> change TLP to performance(depending on desktop environment you may have a battery life settings panel) -> reboot into bios and change power settings to performance.
Ran a benchmark and my CPU was running at full power when it was limiting itself to 2Ghz before.
Did you change your bios settings to performance? I had the same problem but changing both bios and power management to performance finnaly let my CPU boost to advertised speeds
Thought I settled down with EndeavourOS… then I got into ricing and the urge to move to void or alpine is strong
Now you’ve got the idea of making a game around filling out open street map info. I’ll add it too the list of “cool programs I don’t have nearly enough time to make” 😔
Have you taken a look at the pinetab? Its probably the most Dev oriented Linux tablet. Librem-11 might be the only Linux native x86 tabket but if you don’t mind flashing a new OS a refurbished/used microsoft surface would be cheap and powerful. (Need the linux-surface kernal for all functionality)