Is IntelliJ optimized for CPUs with more cores?

I would like to make my IntelliJ faster. In our project, we have a lot of dependencies and we use kotlin, indexing takes time, compiling takes time, and booting up the spring boot thing takes time. My question is, how IntelliJ is optimized if I add more cores to the system? Thinking about buying new Intel or Ryzen, but my feeling is that the software is simply lagging behind the hardware in last yaers. We are adding more and more cores, but software mostly uses just single-core. Is it something that is also happening in IntelliJ? Let's take indexing, is that optimized? Is code analysis when committing to git repo optimized? That would help me to decide on whether I should upgrade or not.