I'm exactly in the same situation.
how it is possible that a high-end product is so bad??
I bought recently the IRGB PLUS 1050w too, and the fan runs too fast for the insignificant load it has. The noise is unbearable all day long.
In addition, the DPS G app does not work, when reboot loses all settings, and if I use the "zero fan" mode I gain only 100/200 RPM less.
I hope someone will solve these issues, very quickly or I will change the manufacturer in this same way