webdriver windows server 2012 IE10 slow sendKeys keytype

I was writing a selenium test for Login and while running it on local virtual box vm it runs fine but when I ran it on an EC2 windows server 2012 instance it was crawling, every keypress was taking 2-3 sec. At first I thought its the autosuggest that is slow but even keypress in password column were slow. On googling I found that the 64 bit webdriver selenium native driver was the culprit.

Replacing that with a 32 bit driver fixed the issue.