bilingual_enigma

Over the past few weeks I've started noticing an issue with demand in my commercial and industrial sectors. They have dropped completely and buildings are going abandoned. I'm losing jobs but residential demand is still going up(????) I've gone on and let the simulation run on a few surrounding communities and it's doing the same thing and causing large parts of my cities to go abandoned and is greatly affecting gameplay. Is there a fix for this? Does something need adjusted or reinstalled? I've tried everything; adjusting taxes, mixing zones in certain areas so sims don't have to travel far, eliminating zones, rezoning...etc. to no avail. The city referenced in the pics used to have a population of around 90k with over 100k jobs which were shared with the neighboring city to the right. In a matter of one or two gameplays it's dropped below 40k. Again, this is happening to every city regardless of size and as you can see I haven't maxed out the demand in any area as I leave room for expansion and redevelopment in most of my cities. Is there a fix for this? What do I need to do?