I have my reference card stable in everything including all TimeSpy stress test at the same frequency as yours. However, the TimeSpy GT2 stress test (looping enabled) fails sometimes for these settings while at other times it runs for more than 40 loops without any issue for the same time. Also, the failure is generic "an error occurred". Can I request one thing? Can you do a run on your GPU with on TimpeSPY GT2 test on loop and share your results.If you want a non H chip that does well you need to pick cards that have strong factory overclocks because that's a pretty good indicative of the quality of the silicon.
For instance, my Toxic comes with a boost clock of 2660 Mhz and 2100 Mhz memory OC (16.8 Gbps). This is guaranteed so I already knew the card was higher than average but still, there are better cards here that aren't H chips but that's rare.
In fact, I've seen only 1 bench here in Time Spy higher than my Toxic non H chip (22.200 Graphic Score).
Being on water helps a ton too because hotspot temp is nowhere near throttle limit.
Though, I have seen a case like yours, where the card barely beat 3080's on synthetics. All in all I wouldn't stress too much about synthethics because the difference between 2500 and 2700 is like 1 to 3 frames most of the time??