Back when this model was released, ppl were encouraged to have a fan to keep things below the throttle temperature. I’m pretty sure my “idle” processor and memory usage, which can creep up over 50% of my Pi4’s 4GB, can be directly attributed to a bunch of IPTV channels/IPTV Simple. Temperatures used to creep up towards 60C until I bought a massive copper heatsink with contact points for SoC and RAM, and a good thermal paste from AliExpress. Now I might tick over 50C when I stream 4K remuxes over Ethernet…
Oh! I’ve also disabled wifi on the Pi, which may help. I bet a gentle breeze would drop temps a few degrees more, consistently.