Optimizing Selenium scripts for speed and performance is key to decreasing execution time. There are various steps you can take to do so; one approach might be reducing page refreshes/waits in favor of conditional waits that trigger by specific page elements.
Headless browsers or cloud-based services can also help reduce test runtime by simultaneously running tests in parallel, shortening overall run times. Another technique to reduce data transfer between browser and server by employing efficient selectors and eliminating unnecessary requests can help limit data transfers between browser and server; additionally, optimizing test environments to reduce unnecessary logging can boost Selenium script performance as well.