Soldato
Sounds like the mining software must be poorly optimised for the RX 6000 series because they're actually quite good in a variety of hashing benchmarks (https://www.phoronix.com/scan.php?page=article&item=amd-rx6800-opencl&num=5). Wouldn't be surprised if there was a cheeky farm out there taking advantage of a client they've optimised themselves for this.