I got message
Similar problem was mentioned here a few years ago"CURLE_OPERATION_TIMEDOUT: Operation too slow. Less than 1 bytes/sec transferred the last 30 seconds"
viewtopic.php?t=10240
As Google improves security over time, the problem probably changes.
I found info for possible workaround via API parameter acknowledgeAbuse
acknowledgeAbuse
boolean
Whether the user is acknowledging the risk of downloading known malware or other abusive files. This is only applicable when the alt parameter is set to media and the user is the owner of the file or an organizer of the shared drive in which the file resides.