I have yet to see any real world benchmarks confirming the real world performance of these Loongson CPUs.

For some of the more recent Loongson CPUs they claimed IPC parity with older AMD/Intel CPU but at much lower clock speeds; de dafcto rendering them uncompetitive.

That being said, they have a massive captive market and the CCP can essentially force (“incentivize”) the use of such CPUs without regards for performance.