AMD Ryzen 7 2700X-€219
159,077 User benchmarks, average bench 76%
AM4, 1 CPU, 8 cores, 16 threads
Base clock 3.7 GHz, turbo 3.65 GHz (avg)
That should have been above the base clock. It confirms the themal throttling suspicion. Replace the thermal paste, buy a better cooler, improve the case...