docs: clarify speeds above 50x

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Co-authored-by: bedaHovorka <5263405+bedaHovorka@users.noreply.github.com>

Author: Copilot

docs/SIMULATION_SPEED_CONTROL.md

@@ -111,7 +111,7 @@ Notes:
 ## Limitations
 
 - The slider stops at **10x** even though the runner supports up to **100x**.
-- `50x` is available from presets and the menu; reaching speeds above that requires incremental shortcuts or programmatic control.
+- `50x` is available from presets and the menu; to reach values above that, press `+` repeatedly from `50x` until the runner reaches its `100x` cap, or set the multiplier programmatically.
 - Speeds above roughly **10x** are useful for throughput, but animation becomes progressively harder to follow visually.
 - At **50x** and especially **100x**, small simulation deltas often round down to **0 ms sleep**, so execution becomes effectively CPU-bound.
 - In CPU-bound ranges, expect higher processor usage and less visually smooth animation than at `1x`.