Knighttron - Dia-Show - Very low performance

[desertking]

Describe the bug

Here is another example of a very low performance.

Expected behavior

Run at 30fps at least :)

Content Location

https://www.spiele-umsonst.de/azad/downloads/flashgames/knighttronssl.swf

Affected platform

Online demo

Operating system

All

Browser

All

Additional information

No response