ASUS STRIX RTX 2070 Games crashing and insane framedrops

[hypershake]

Hey Guys,
so just recently my RTX 2070 has started failing on me.
Basically i could play any game on high settings without issues until yesterday.
In some games like MHW and R6 the game just closes, in other titles like Forza Horizon 4 and BF5 the frames drop to 1 FPS and massive stutter.
So i monitored my GPU via GPU Tweak II and Gpu-Z and MSI Afterburner.
After Benchmarking i recocognized a similar pattern everytime: All games crashing/Framedroping started to crash when my GPU hit ~60 °C-not that much for a GPU under load IMO.
So i checked the clockspeeds again and it seems like everytime the card hits 60 °C/games chrash the GPU clock falls down to 300 MHz and the Memoryclock drops to 810 MHz.
-> this are the clocks on the GPU when it is in idling mode.

So could there be something like a Safe Mode on the card which seems to be broken (~60°C should not trigger this mode.)
I already reinstalled the Drivers and reseated the GPU.
All Components run at stockspeeds.

Should i contact my vendor for a replacement or should i wait for possible fixes with the next driver updates?
I can still play as usual, as long as my temps are not hitting 60°C.

My Specs:
GPU: ASUS STRIX RTX 2070 OC
CPU: Ryzen 5 1600X
MB: ASUS STRIX B350 F-Gaming
16 Gigs of GSKILL Trident Z RGB 3200 CL16
PSU: beQuiet! 850 W Power Zone bronze 80+