Are you having the same problem in portrait mode and landscape mode? With the same keys, or different keys (when switching modes)?
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I have had the same issue several times. I'm used tp typing fast but then when a key doesn't work, it throws a stick in the spokes. Often times if I want to press, for example, an e, I press e but it registers as either a r or w. Very displeasing indeed. I'm also rooted and it happens regardless of the ROM I use which leads me to believe its a hardware issue.
I thought this too however if you happen to overclock to 1.4 ghz with imoseyons the lag dissapears . This is with the snartassv2 governor.
I think it happens with undervolted kernels but overclocking seems to help.
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