I stopped using synthetic benchmarks several generations back.
1. Some of them can damage your CPU
2. They present a load pattern that you CPU will never again see ... so limiting your OC because temps are high under a synthetic means you have artificially lowered your OC cause that load will never been seen again.
3. You can be 24 hour stable under AID / P95 and then fail in a multitasking type benchmark like RoG Real Bench.
That being said....
1. What is 1.310v ? Is that the voltage you set in the BIOS or is that the voltage including the 0.13 boost that arrived when AVX instructions are present ?
2. What is 65C ? Is that the CPU package temp or the peak instantaneous voltage observed during a 2 hour test ?
3. Personally, I limit voltage to a max adaptive value of 1.375 ... when AVX is present, it peaks at about 1.5 and I'm fine with that.... as for temps, I don't want to see anything above 72-75 for an average core temp... but won't get concerned unless I see a short duration instantaneous peak of 80C on 1 core using RoG Real Bench and HWiNFO64 for testing