Steps to reproduce:
1. Not a 100% but seems to happen after a few previews, fixed after closing tab and re previewing.
Preview becomes very blurry increasing with each 'Preview'
Goes from a clear normal preview to
and eventually will be a barely visible blur.
Be clear every time.
Firefox: Not sure
Internet Explorer: Not sure
Operating system & service pack:
Windows 7 Home Premium
Construct 2 version: