I've been enjoying restaurants for years as an owner and a visitor. I only ever had issues caused by cc or bad placement of build items. My restaurants are working perfectly fine. Just had a couple get married at one lol
I'm sorry you are having issues but I can't imagine what it could be.... have to tried a brand new save?
Honestly saying EA FIX THE ISSUE! Does not magically fix the issue. The only way they can fix it is to be able to reproduce your exact issue. That's why it's important you start cc/mod free on a new save to test it. If it still happens report it so they can reproduce it.
Then you have to be patient so they take time to discover why this is happening and fix it.
Unless you just don't want the game all together you can just do something else in the game if you find restaurants unplayable for now.
But it's working fine for me personally. I have all packs,mods and cc
