what happens if i clear my cache?

i need to clear my cache for a mod, but i dont know what it does. help

 

The 'cache' for a program is basically a list of the most recently accessed or most frequently accessed assets, files, subroutines, etc. that the program temporarily stores to make quick access in the future much quicker. This is the reason that duplicating tabs in chrome is so fast compared to visiting a website that isn't in the cache. Clearing your cache will force the program using it to forget what you accessed recently. In Beam, this will mean levels and cars might take a little while longer to load in the first time. The reason the mod is asking you to do this is probably because it is a mod of an existing vehicle or level, meaning there will likely already be a copy of that default asset in the cache, unmodded. this can lead to a conflict between the vanilla copy in the cache, which the game looks at first, and the new files that the game looks at if it can't find anything in the cache. This conflict can make the textures glitch or not show up, or prevent the mod from working altogether. My advice, if you trust the mod, clear your cache. It's not that big of a deal.