When debugging suspendable functions, it often says "optimized out" for variables I'd like to see. Is there a way to adjust/disable this type of optimization for debugging purposes?

It's not possible, please follow https://youtrack.jetbrains.com/issue/KTIJ-19629

Thanks @Alexey Belkov [JB] for the pointer. Added my vote in hope for an even better future. I've also figured the workaround already, but maybe the IDE could point to it until a fix becomes available for those who don't.