Presidential elections with majority run-off rules pose what sort of trade-off?

Question

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Majority run-off rules require a candidate to win a majority of the vote in order to become president, which generally increases the legitimacy of the winner by ensuring that they have broad support. However, this also tends to produce a more fragmented legislature because voters may split their votes among multiple parties in the first round, leading to a lack of clear majorities for any one party. This can make it difficult for the president to pass legislation, as they may need to form coalitions with multiple parties in order to do so.

Presidential Elections with Majority Run-Off Rules Pose What Sort of Trade-Off