The same problem occurs to me when typing the beginning letters in chrome address bar. It gets slow and pauses.
I searched the Internet and find out nothing to solve it.
But I tried in some way to speed it up, and now chrome works fine! Hope my post may hell you!

Try some of the belows:

• Clear very thing of chrome cached data

If it resists, try to

• Disable “Use a prediction service to help complete searches and URLs typed in the address bar” in “Preferences settings”

Till now, chrome works well, but it’s a pity I lost my cached data.