Guidance on Optimizing FPGA Design for Better Performance

Start with the user guides written for this (Design Recommendations, Design Optimization): https://www.intel.com/content/www/us/en/support/programmable/support-resources/design-software/user-guides.html

Then take a look at training. There are many self-paced eLearnings as well as free instructor-led classes on these topics: https://learning.intel.com/developer/pages/128/intelr-fpga-training