Amiga pink sparklies on black/grey transition

[psoma]

• Multiple builds (including latest)
• Capacitor fitted
• Numerous timing/overclocking settings tweaked without any change
• Tried multiple cards and multiple Amigas
• Tried on both Amiga 500 and Amiga 2000
• ... getting the same result
• Specifically on hard transition from black to grey

YouTube Link to video example

Can consistently reproduce it in the first screen of Police Quest here as a very clear example.

[psoma]

Closed due to duplicate issue