itch.io

I'm running an AMD Radeon 5700 and I get this issue as well.  I found a thread about it on the Construct forums.  It looks like it's largely due to AMD, but there's a few fixes that some users threw around.  Not sure if they're helpful, as this jargon is quite impenetrable to me. 
https://www.construct.net/en/forum/construct-3/general-discussion-7/3d-rendering...