Environment Variables that apply to the RAM Disk TMP, TEMP there.
TMP, TEMP and is usually stored in a temporary folder path in the same set.
Systems and applications are stored in a temporary file.

Used by the user and the system can be set for each temporary folder.

Default User temporary folder : %USERPROFILE%\AppData\Local\TEMP
Default System temporary folder : %SystemRoot%\TEMP

Ultra RAMDisk settings, you can easily set a temporary folder.
Temporary folder on the RAM Disk is set to a faster system performance.

Control Panel > System and Security > System > Advanced system settings > Environment Variables