问题
Earlier I was using chrome 32, which was very fast. But after upgrading to 36, it is very slow. It is taking more than a second to execute sendKeys instruction even after location element.
Any help would be appreciated.
回答1:
The answer can be the following if you use 64-bit OS architecture on your PC - as far as I remember is because Selenium performs switching between 32-bit and 64-bit mode (which is very slow operation). ChromeDriver was supported only in 32-bit. I had same issues with IE driver too.
Update:
Next thing to check then is that the proxy and network settings in chrome have not been altered. In the begging I considered extensions and add-ons, but Selenium raises clean instance each time. As to #36 being slow - check the dev threads on google chrome, you will see the issue has been ongoing for well over 6mths and is affecting cross-platforms too. And one solution is try disabling hardware acceleration.... it was a tenfold improvement for me on my laptop. To disable it... type "chrome:settings" in the address bar, click Advanced Settings, then uncheck "Use hardware acceleration when available" under the System header. Close all open Chrome browser instances and restart Chrome.
来源：https://stackoverflow.com/questions/25240002/automation-execution-is-too-slow-in-chrome-using-selenium-webdriver-36