Steps to reproduce the issue

• Construct a road 1600 blocks long and 2 blocks wide made of blue ice.

• Straightly drive a boat through the passage

• Measure the time with an external source

Expected result

The boat travels cleanly at 72.73 m/s, which is the reported top speed for both Bedrock and Java.

Actual result

The boat’s average speed is only slightly more than 55 m/s