Does RAMDisk console have a parameter to change the default cluster size (4k) to a different one when a RAM disk is created?
For example, this command creates a disk with the default cluster size only:
"C:\Program Files\SoftPerfect RAM Disk\ramdiskc.exe" /add:R /fs:NTFS /size:512G /label:TempDB /hdd /type:boot /mount:yes