But you need to use UIStroke to edit the thickness of the Stroke. Under TextLabel you can only edit the color and transparency, and It doesnt scale correctly
Let me see if i can find a workaround, give me a bit.
Edit: but keep in mind if it stays the same thickness it might not be readable on smaller resolutions, so they might have it remain similar for a reason, but let me try out some things.
Funny thing is… reading the forum post about it, one of the things they are boasting about is that you can customize it with richtext through scripts
RichText has been giving people mixed results when in studio versus in game… and i have read a few solutions that all point the finger (in a positive way) at disabling rich text. Maybe some things need to be fine-tuned with it for it work seamlessly (and maybe on our end, not roblox end).