Cache folder

Here you can find the cache folder:

/Library > GROUP CONTAINERS > RANDOMNUMBER.RU.KEEPCODER.TELEGRAM/account-RANDOMNUMBER/POSTBOX/MEDIA/CACHE

If you are using an old version, it could also be here:

~/Library/Containers/org.telegram.macos/Data/Library/Caches/org.telegram.macos

/Users/%username%/Library/Caches/ru.keepcoder.Telegram/cache/

Containers/ru.keepcoder.Telegram/Data/Library/Caches/ru.keepcoder.Telegram/cache