Slice and dehydrated some!
Dehydrated mushies can be kept (long shelf life) to add to meals. Or put them through a food processor to make a powder (takes up much less space, if that’s an issue for you) which is great for extra flavour in soups, sauces, casseroles, etc.
You can boil them to extend shelf life. Once a food is cooked, you have another week (approximately) to use it before it goes off - maybe a little longer for eggs still in unbroken shells. Boil them, store them in the fridge, and add them to meals over the next week.
If you already have the cheese on hand, do an experiment. Cut off a piece and freeze it overnight. Next day, defrost it and see how it is. Because the issue you’re concerned about is change to texture or taste after freezing and thawing, you only need to leave it long enough to be fully frozen through - not as long as you normally would for storage.
(You wouldn’t want to buy a bulk size piece of meat/cheese just to experiment, but if you already have some on hand it’s worth trying for yourself to find out if you’ll find the result satisfactory.)
I was having a similar problem with another game, and I had a similar desire to learn general troubleshooting rather than have someone give me a specific fix. That said, I don’t know if I can help because for me it’s basically butt my head against a wall until I poke something enough that it works - usually I don’t know enough to understand why the thing works.
I was installing my games onto a secondary drive. The problem turned out to be that that drive had been formatted by Windows back when my computer was set up to dual-boot. Some games still ran fine in Linux, but this particular game nothing would happen when I clicked Play. On a whim I tried installing it on the primary drive with the OS, and it worked first time. So there was something about that game that didn’t work with the drive formatting.
(I’ve since reformatted the second hard drive so that everything should now play nice with Linux, now that I no longer have Windows. Game is fine now.)