Will affect the running speed of idae. Due to the limited space on drive C, IntelliJIDEA will store some files and caches on drive C, while the code files are on drive D, which will slow down the access to files and thus affect the running speed of IntelliJ IDEA.

Therefore, it is recommended to install IntelliJIDEA and code files on the same disk to avoid affecting the running speed of IntelliJ IDEA by accessing files.