Hi KnightBolton,
Thanks for your post in Microsoft Community.
I understand that you have encountered a problem where you can't read the text for a while when switching between dark\light mode.
Sorry, this switching process is unavoidable. When you switch display modes, the system needs to change a lot, and the speed depends on your computer's performance.
It's worth noting that if you turn off "transparency mode", this process will be faster. The switching process requires less computation, which can effectively speed up the switching.
Thanks for your understanding.
Kirk | Microsoft Community Support Specialist
* Beware of scammers posting fake support numbers here.
* If your problem is not solved, you could reply to the post again and we would continue to provide technical support for you.
* Please check and vote this answer if it helps as it will be beneficial to more community members reading here.