This question has been asked many times, and it keeps coming back. Without too much hope, here we go again:
Latest MacBook 16" Catalina 10.15.6 Two Philipps 273V monitors connected via Satechi USB to HDMI adaptor OS X fonts are OK Acrobat fonts are fone MS Office, Chrome - fonts are horrendously blurry
Tried to turn on/off font smoothing - no effect. Changed the monitor profile to RGB - helped a bit.
Needless to say, with Windows PC the monitors look fine.