Using the GS CRT version, it's perfect on real C64 (using U2+ and Kung Fu Flash cartridges) and of FPGAs (Mister, Sidi, Mist & Mistica), while on BMC64 (Bare Metal C64, Vice on Raspberry PI 3B+ without Linux underhood) and on TheC64, game works but each few seconds i can see like a like freeze, it's quite tedious.. maybe need a bugfix on these 2 systems? On both Vice emulator is not Cycle Exact