One of the things which can often cause slowdowns in PokerTracker 4 usage is the amount of time to read from and write to the hard drive.
To help improve performance, we have compiled a list of things you can do which may speed up hard drive access times based on tweaking a few settings with your hard drive. Performance gains will vary from system to system, and as such cannot be predicted within this guide; each user should gauge performance improvement based on his or her own usage experience metrics.
If you are running the Microsoft Windows OS, you are almost certainly using the NTFS file system. PostgreSQL would complain when installing the Windows version on a non-NTFS file system, so if you did not have problems installing PostgreSQL, then you can safely assume you are using a NTFS formatted drive.
Users of modern Solid State Drives (SSD) should not be concerned with performance tuning, SSD drives are high performance drives without mechanical parts, and as such these drives do not require tuning.
For more information, please review the PokerTracker 4 Support Guide titled What are the Minimum System Requirements to run PokerTracker 4?