It could be a USB-C adapter issue if you are using HDMI. Just try different adapters until you find one that works well with your monitors. I don't understand

It could be a USB-C adapter issue if you are using HDMI. Just try different adapters until you find one that works well with your monitors. I don't understand why Apple doesn't make a high-end multi port USB-C dock after all these years. Third-party quality isn't consistent.