Scrolling is indeed not accurate, it was 4 times normal speed so I reverted it to original for v4. On faster WinUAE it may behave differently. I'll set it in the middle then with 2 times the normal speed.
Viewing post in VanillaConquer - Amiga port comments
https://mega.nz/file/Yss2EKKB#DDi8R1tyNUCQ0Js9RhyyQUftuZWroANXQJPULOjZRlw
Here scroll speed is with 2x multiplier