170mb is not large for a Windows game made in 2022. However, you can consider that as a “baseline”, as the other files are required to make your game work at all.
However, it is just that, a baseline. As you add more files/events/etc to your game, the filesize will increase, but that ~150mb will not be added on each time. It’ll always be roughly 150mb + all of your files from there on.