One hears a lot of complaints about memory foam sleeping hot. Does this get worse the thicker it gets, or does ANY memory foam at all tend to make a bed sleep hot?

I am considering getting some 1" Sensus or a cheap 1-1'2" Walmart convoluted MF pad, and am curious how much hotter this might make me compared to the PU and latex foam already on the bed.

Is the cheap 1.5 MF topper you plan to get from WM made by Simmons? If you end up getting it, let me know how it works for you.