1. Yes, the shadows may be PC resources hungry (I bet you're right) compared to new games but the specific issue happens regardless of frames per second. The time scale - shadows stutter happens regardless of 30, 120, or 300 fps. 2. Yes, it is 2017 but 95% of this core game-engine (physics, sound, UI, graphics, etc.) isn't 2017 but basically from the late 90s to early-to-mid 2000s. There's only so much you can do, realistically speaking, with a 15-ish year engine so...basicallly...ya, bring on the new Reiza game which hopefully has more-engine upgrades on all fronts (physics, sound, UI, graphics, etc.).