We have analyzed the log file, Windows returned the error code 0x35 (ERROR_BAD_NETPATH, The network path was not found.) when Hasleo Backup Suite tried to read or write the backup image file on the network share, this is usually caused by a network failure or network instability.
Regarding the issue of slow backups, it looks like you've created multiple file backup tasks. V5 doesn't make major changes to file backups, did you choose to back up files on the entire C: drive? If you want to back up most of the files on a drive, you should use disk backup instead of file backup, because disk backup reads the data on the disk directly without going through the file system, so it will be faster.
Regarding the issue of slow backups, it looks like you've created multiple file backup tasks. V5 doesn't make major changes to file backups, did you choose to back up files on the entire C: drive? If you want to back up most of the files on a drive, you should use disk backup instead of file backup, because disk backup reads the data on the disk directly without going through the file system, so it will be faster.