I was using version 2.9 for a long time without any problems, but since the switch to version 2.10 several large tables (> 100,000 rows or 1 Gb) backups do not end sometimes with an indication of lack of memory:
Allowed memory size of 536870912 bytes exhausted (tried to allocate 4096 bytes) in /var/app/current/vendor/ifsnop/mysqldump-php/src/Ifsnop/Mysqldump/Mysqldump.php(1158)
Sometimes with a crash without any error message.
After multiple tests by trying to change for example the 'net_buffer_length' parameter without success, I went back to version 2.9 and everything is back in order.
I invite you to look at this issue.