That LBC statistic must be incorrect because a single 4xxx level card should be able to do 90mkeys/sec entirely on its own, and 50-100 times that if it does a linear scan of the private key space.
Looking at
https://lbc.cryptoguru.org/about, it looks like they only perform 3 performance optimization and they use software called "GPUAuth4All" for GPU brute-force. I expect it's combination of optimized GPU usage and lack of interest towards LBC.
The aim of my previous post was to show that there are some fantastical ppl who put their efforts on finding collision.
Assuming you trust them, especially with their closed-source software which have remote-execution capability.