First attempt at a fix for #522 - this is a hack.
Keeping track for future reference
Set OptimizedDoubleBuffer appears to fix WinForms issue where previously only able to Create the browser in the constructor
Merge pull request #547 from amaitland/fix/522

Fix #522 - Can Only Create Browser in Constructor
Merge remote-tracking branch 'remotes/upstream/cef/2062' into cef/2062-jsb-wip