Don't know if it's related to the same issue, but I've filed a feedback for scrolling judders at 120Hz with the M5 Pro MBP + Studio Display XDR. See my last message posted "Sep 2, 2026 8:55 AM" : https://discussions.apple.com/thread/256349330?answerId=262097022022 at 120hz Total frames: 2562 Held for exactly 1 interval (healthy): 1794 (70.0%) Held for exactly 2x interval (dropped/repeated): 694 (27.1%) Held 3x+ longer (multi-frame stalls): 74 (2.9%) Longest single stall: 991.7 ms at 60hz Total frames: 1717 Held for exactly 1 interval (healthy): 1676 (97.6%) Held for exactly 2x interval (dropped/repeated): 20 (1.2%) Held 3x+ longer (multi-frame stalls): 21 (1.2%) Longest single stall: 383.3 ms I also captured a trace on the MBP display with ProMotion enabled and measured about 90% healthy frames. I don't know how reliable this method is for measuring frame health, but it seems to match the level of scrolling stutter I observe during scrolling.