Hmm that doesn't seem to match with the other issues we've received they've usually been solved by using the comman line and/or reducing the refresh rate. Basically the change for CU1 could cause the frame rate to become unbounded in some setups, which the game isn't designed to handle and would break some things. But your issue seems different perhaps.
Also worth checking your nvidida control panel v-sync setting to make sure it sets to application default.