Zombie Trailer Park - Something causes hard lag and performance problems

[desertking]

Describe the bug

Dunno what the real problem behind this lag is, but this game clearly doesn't look like it needs to lag :)

Expected behavior

30fps all the time

Content Location

Loading SWF file https://www.spiele-umsonst.de/azad/downloads/flashgames/ztp.swf

Affected platform

Online demo

Operating system

All

Browser

All

Additional information

No response