Re: GPU reaching 185F under load.
185F is 85C. Which is safe. Most are rated up to 90-100C, I believe.
But you should try to get it lower. You can clean the dust off the GPU's heatsink, increase airflow to the GPU or within the case, lower the ambient room temperature, or use an aftermarket heatsink.
It's preferable to keep the load temperatures around 60-70C (or 140-158F).
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