Not sure if it might be related to specific instances, i.e. large organizations with hundreds of channels, etc like in my case... still, my workstation is pretty beefy, threadripper pro 7985wx, 256GB RAM, RTX 4080 (and this is no software issue, as other, much more resource intensive apps run just fine)... though slack is unmistakably sluggish, to the point of me being frustrated enough with it to complain about it here :)

just hate it.