In WinUAE You can change CPU speed to Fastest Possible without JIT and Cycle Exact unmarked. Now game is working better. Glitches are, when scroll is reset to position "0" and two bitmaps (with bouble buffer) are refreshing together with including next platforms. Maybe in future I rewriting this part of code.
On my Real Amiga 1200 with 8MB Fast Ram game working fine.
Thanks for testing a game :-)