This send to imply the compression can help with soreness aspect after an ultra marathon https://www.jospt.org/doi/full/10.2519/jospt.2016.6455
Though seems to be a huge lack of studies.
This study shows a decrease in soreness but kind of implies that it would decrease the ability to improve after working out in the same way taking nsaids have that impact (decrease in molecular signaling) Does external pneumatic compression treatment between bouts of overreaching resistance training sessions exert differential effects on molecular signaling and performance-related variables compared to passive recovery? An exploratory study - PMC