Considering your fans are already running at over 2400 rpm and your hotspot already sits at 84°C, I'd say something is pretty off. Just for comparison:
My reference card with Furmark running at 3440x1440 with 4xMSAA enables settles around 72°C hotspot with the fans running at around 1800 rpm, so much lower compared to your card. However my case is the complete opposite of yours: It is a very airflow trimmed case with a total of eight fans.
Yes - my case box is very hot and totally quiet. I need that cause im working a lot and like quiet atmosphere. 3 fans vs 8 fans is big difrent, but quality of fans matter. Simply SilentiumPC fans are not very good, but at 900-1000rpm inaudible. I'm playing games at QHD 60Hz. No need for more refreshrate. I like stable 60fps at maximum graphics preset. On previous card 2080 Super FE GPU reached 85C and started throttling. Maybe 2400rpms is not quiet in open bench, but in my case is nearby acceptable fan noise. Sorry for my poor english.