Massive sim slowdown on approach to KMLB

No, you don’t sound nuts at all. Performance last two days in central Florida is terrible and renders sim unusable. Certain stock airports (i.e. KPIE, KORL, KMLB, KSFB, others) CTD before sim loads the flight (multiple aircraft attempted with same result). Even more frustrating KMCO, KPBI, LatinVFR KMIA are rendering absolutely smooth and seem to stay that way. I have tested other areas KBUR, KSNA, KLAS, RJTT, RCSS and found no issues- smooth performance with high graphics.
The really maddening thing is that, prior to update, I had everything running just fine. I dread these updates more and more. Is ‘quality control’ still a thing?