KDE is practically dead after latest update

.Hi all, After the latest major update (including kernel 6.9.3) KDE Plasma X11 became unusable on TW. Plasma Wayland is even worse. Fortunately XFCE can be used, though it lso slowed down with long response times to clicking. What happenned? Can somebody help me to figure out? Thanks, Albert /In addition I also lost my microphone, which I would badly need for Zoom/Teams/