DynamicSlowMPU:with the first of two bigs boosted

Build 1780 on ash/fixed-small-slow-I-design-issue
740px
Reviewing disabled
BaselineBuild 1170 on main
Focus was turned on because there are subtle diffs in this snapshot.
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Focus was turned on because there are subtle diffs in this snapshot.
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Baseline History
Build 17806675bff
Current build. There are unaccepted changes, so build 1170 is still the baseline.
Build 738da757ab
Accepted by Anna Beddow.
Build 663632e3e0
Auto-accepted
Build 59443b741d
Accepted by Olly.
Commenting is disabled because there's a newer build on this branch