I'm also having this issues - freezing for up to 20 seconds, with a dual monitor system.
(Both external monitors are Dell HDMI monitors, but different resolutions)
MacOS Monterey 12.6.1 (just upgraded < 2 weeks ago)
MacBook Pro (16-inch 2019)
CPU: 2.4 Ghz 8-core Intel Core i9
Memory: 32 GB 2667 Mhz DDR4
Very frustrating
Topic:
App & System Services
SubTopic:
Core OS
Tags: