mathematical optimization - Unexpected slowness of FindShortestTour through 9 points

This a very useful function, but it is very slow:

FindShortestTour[{{0, 0}, {0.2`, 0}, {2, 1}, {2, 2}, {2, 2.5`}, {1.5`,
6}, {1.6`, 7}, {1.4`, 8}, {1.9`, 10}}]; // AbsoluteTiming

{1.80721, Null}

I tested just 9 points, which cost me almost $2s$. I think there is a bug is behind this behavior. So I reported to Wolfram Support (CASE:3847386), but I received a response like：

Thank you for contacting Wolfram Technical Support.

I followed your example and evaluated it on my machine:
FindShortestTour[{{0, 0}, {0.2`, 0}, {2, 1}, {2, 2}, {2, 2.5`}, {1.5`, 6}, {1.6`, 7}, 
      {1.4`, 8}, {1.9`, 10}}]; // AbsoluteTiming
(* {0.0847348,Null} *)
Please consider resetting Mathematica and see if the issue can be resolved.

My processor is a Intel® Core™ i5-6500 Processor, and when I run Needs["Benchmarking`"]; Benchmarking`BenchmarkReport[], my system scored $1.29$ WolframMark points. Many time show it is a very low efficency function:

Table[
 First[
  FindShortestTour[
   {{0, 0}, {0.2`, 0}, {2, 1}, {2, 2}, {2, 2.5`}, {1.5`, 6}, {1.6`, 7},
    {1.4`, 8}, {1.9`, 10}}]; // AbsoluteTiming
 ], 

 5
]

{2.43196,2.01361,2.37832,1.97023,1.78632}

I would like to confirm whether some bug in this function is causing this behavior.

Update

This is a regression of version 11.0, and just on Windows:

test on windows

test on mac

test on linux

Comments

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