GiMeSpace RAM Temp Folder is a small app that **may** speed up *some* software. It's based on the use of a very small ramdisk -- basically the same thing as a virtual hard disk, only this fake disk is stored entirely in memory [RAM], rather than as a single file on a physical hard disk. There's a nice article on What is a RAM Disk here: kingston.com/en/blog/pc-performance/what-is-ram-disk . For a good explanation of what GiMeSpace RAM Temp Folder does, read the readme.txt file in the program's folder -- when you click Help on the app's control panel that's the file that opens.
That said, GiMeSpace RAM Temp Folder creates a small RAM disk and uses it to temporarily store some of the data that software [Not Windows] would write to Windows temp folder, and then writes that data to disk, minimizing the risk that comes from RAM being volatile storage, where everything is lost once power is interrupted. The speedup comes from RAM being the fastest way you can read/write/store data. To be of benefit to whatever software you're running, reading and/or writing data to the temp folder would have to be a bottleneck, with whatever processing waiting until that was accomplished. All you can do is try it and see if it helps. There are no settings and no complicated setup, like there might be with other RAM disk software.
Installing GiMeSpace RAM Temp Folder adds the program's folder in Program Files (x86), along with a folder is Users\ [UserName]\ AppData\ Local\. As far as I can tell the registry gets 2 keys for the app plus one for uninstall -- monitoring the installation in a Win11 VM I recorded over 200k new entries in HKLM as a couple of hives were rewritten, so it's possible I missed something.