Update v2.01:
General performance improvements (see v-sync fix)
The game was not properly handling v-sync, and would enable it when booting up the game despite turning it off in the options menu. The game now handles v-sync in a better way so that it doesn't degrade performance. The default is now off, and can be switched back on in the options menu.
Fixed bronze/silver/gold medal targets not displaying correctly when you have over 398 medals.
Table decor showing up as a black solid object when using wall booths on Low settings has been fixed.
Chimichanga label now displays properly when using large ingredient fonts.
Audio feedback added when you do not have enough money to buy food.
Improved display of stars on save slots for levels above 50.
When in practice mode, exiting out while prepping a food would cause the restaurant background to stay dim in the main menu, which has been fixed.
Fixed visual bug that would display bronze/silver/gold medals for restaurants you haven't fully unlocked or completed.
Fixed bug that did not allow you to select a carpet in the designer if you only had one unlocked.
Fixed bug that did now allow you to select a hardwood floor if you had selected a carpet but only had the default hard floor unlocked.
Added a message in the designer that reminds you how to quickly undo a placement of an object when available (press Z/Middle Mouse Button/X/Square)
Added specific button inputs for the designer depending on what controller you have selected instead of the generic text.
Fixed somewhat rare issue where a player could select a prep station and holding station at the same time via controller.
Fixed bug where Start/Options was not working to confirm new display settings.
Tamales now correctly count layer order when determining a perfect order (originally you could set the stuffing outside of the tamale for the sixth tamale and still get a perfect rating).
Fixed layering issues with the Designer. Objects now layer properly on the wall (for example, a wall fountain will now be placed on top of a wall panel as it should). Your restaurant designs may change as a result, but no items are being removed/added, just being properly displayed.
Fixed layering issue where objects would be randomly changed layer wise when placing a wall object. 
Fixed a few missing objects in various C4H restaurants.