You can try to use FPS Limit in settings. In average it might help not loading your GPU to 100% and keeping temps lower.
You also might consider turning off reflections and setting detalisation range to high instead of very high. These two options eat very much resources in some rooms without giving THAT much to the picture. Just like RT in most modern games lol.
But... 3dxchat IS pretty capable of loading 3050 to 100% even with fps limit lets say to 60, it can get very GPU hungry when it comes to large public rooms with a lot of people.
Honestly, would be nice if devs would add new DLSS / FSR to the game, in 2k and 4k resolutions it makes game load GPU much less while keeping the picture very good on quality preset, sometimes even better than it would look in native with TAA of FXAA.
Though I am not sure how hard/easy it is to implement, I am not a developer, but I know that even modders were adding DLSS / FSR to some games through the mods and considering that devs upgraded game to a newer engine I think its possible, right?