I have tried everything you can think of. Uninstalling synapse completely, using synapse beta, repasting GPU/CPU, buying the useless Razer chroma v2 stand that has hdmi and usb c ports for displays that flicker constantly, turning off intel turbo mode (seemed to help the most), reducing to 60hz on all external and native monitors. My last resort is to try authentic Honeywell PTM7950 (the PTM 7950 from amazon only worked temporarily) and using a llano v12 cooling pad. Support gave me some options but ultimately came to sending the laptop in that would cost a minimum $250 with no guarantee of a fix. The laptop is now 16 months old and seems like it is on its last leg. My 2019 MacBook Pro has no issues running both my LG OLED TV and Samsung M8 monitor. Seems like the company is cramming intensive CPUs/GPUs and can’t keep them cool, which makes them completely useless. I mainly use my laptop for work so am running numerous Chrome windows and this thing just can’t keep up. It is embarrassing. If you can’t find a way to cool the laptop maybe try something like adding an optional external water cooler like the XMG. If anyone has any suggestions I am happy to hear them as I have exhausted all efforts.