Now I'm only getting 8.5 with that one you just showed me

So do you think maybe it's because I'm using CUDA v11.0? My GPU runs at 100% load so I'm sure that it's not a problem with energy draw.
I don't know all the code you changed...here's one way to check real quick. Go download the latest compiled version and run it instead of your compiled cuda 11 version. See what kind of Mkey/s you get.