Windows 11’s November patch is reportedly enabling Memory Integrity (HVCI) on many machines by default, and that can seriously cut performance on older CPUs. For people who do remote freelancing, video editing, or run local LLMs, a sudden 10–40% slowdown is real lost billable time. Check your settings: if Core isolation > Memory integrity is ON after the update, you might be impacted. Who here had this happen, how much did your workflows slow (percent or seconds), and did you roll it back or upgrade hardware? Any tips for preventing surprise performance hits on client machines?