The argument that sentience can't derive from computation alone because computations can be slowed down and done by hand still hold for me. The piece of paper written on or the silicon doesn't acquire different properties because what the operation will be used for, the GPU doesn't differentiate between graphic rendering and weight computation when it's adding 1. That's in opposition with animal brains that not only do computations but interact with real-world matter/fields directly. With that said of course we don't know if human like sentience is a prerequisite to (super)human level intelligence. But recent advancements in AI tends to diminish the argument sentience is a side effect of intelligence though.