I have been backing up to Time Machine for years without issues. Recently I started using pnpm (Nodejs package manager) and the backup process hangs on Mui material icons files (@mui/icons-material). Using "sudo fs_usage -f filesys backupd" I see that it is looping over the same files over and over.
Because then it would be clear who did it. A sabotage in the baltic sea makes it more difficult to find the culprit and probably causes [intentional] blame of countries that might benefit from shut pipelines.
Using the Mail app (macOS) with a Gmail Account and pressing the refresh button, makes the app hang in "Checking for Mail..." for 20-30+ seconds. It is faster quitting and opening the Mail app to check for new mails.
There is a memory leak down the network stack (probably within security library/ TLS layer) that has been reported over 6 months ago but has yet to be fixed. Depending on the app's network usage this is leading to several GBs of leaked memory per day.
I grow up in Germany and can completely agree with you. The landline network is crappy in many areas and the mobile network is one of the worst I have seen (traveled to many countries). My parents recently got a 16MBit connection installed. Currently I am living in Thailand and their mobile network coverage is amazing. Even on an island or in the jungle you get LTE.