FULL PRODUCT VERSION :
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 10 version 1703

A DESCRIPTION OF THE PROBLEM :
The accuracy of method java.util.concurrent.locks.LockSupport.parkNanos under Windows 10 before version 1703 was 1 millisecond (by median). After update Windows 10 to version 1703 the accuracy became 16 millisecond (by median).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run test:

    @Test
    public void testParkNanos() throws Exception {
        final int size = 1000;
        final long[] parkData = new long[size];
        final long[] sleepData = new long[size];
        for (int i = 0; i < size; i++) {
            long point = System.currentTimeMillis();
            LockSupport.parkNanos(1L);
            parkData[i] = System.currentTimeMillis() - point;

            point = System.currentTimeMillis();
            Thread.sleep(1L);
            sleepData[i] = System.currentTimeMillis() - point;
        }

        Arrays.sort(parkData);
        Arrays.sort(sleepData);

        System.out.println();
        System.out.println("parkNanos:");
        System.out.println("Min: " + parkData[0]);
        System.out.println("Median: " + parkData[parkData.length / 2]);
        System.out.println("80%: " + parkData[Math.round(((float) parkData.length) * 0.80F)]);
        System.out.println("90%: " + parkData[Math.round(((float) parkData.length) * 0.90F)]);
        System.out.println("99%: " + parkData[Math.round(((float) parkData.length) * 0.99F)]);
        System.out.println("Max: " + parkData[parkData.length - 1]);
        System.out.println();

        System.out.println();
        System.out.println("sleep:");
        System.out.println("Min: " + sleepData[0]);
        System.out.println("Median: " + sleepData[sleepData.length / 2]);
        System.out.println("80%: " + sleepData[Math.round(((float) sleepData.length) * 0.80F)]);
        System.out.println("90%: " + sleepData[Math.round(((float) sleepData.length) * 0.90F)]);
        System.out.println("99%: " + sleepData[Math.round(((float) sleepData.length) * 0.99F)]);
        System.out.println("Max: " + sleepData[sleepData.length - 1]);
        System.out.println();
    }


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Under Windows 10 version 1607:

parkNanos:
Min: 1
Median: 1
80%: 1
90%: 2
99%: 7
Max: 23


sleep:
Min: 1
Median: 1
80%: 1
90%: 2
99%: 5
Max: 94

ACTUAL -
Under Windows 10 version 1703:

parkNanos:
Min: 1
Median: 16
80%: 16
90%: 27
99%: 30
Max: 48


sleep:
Min: 1
Median: 1
80%: 2
90%: 2
99%: 6
Max: 12


REPRODUCIBILITY :
This bug can be reproduced often.

---------- BEGIN SOURCE ----------
    @Test
    public void testParkNanos() throws Exception {
        final int size = 1000;
        final long[] parkData = new long[size];
        final long[] sleepData = new long[size];
        for (int i = 0; i < size; i++) {
            long point = System.currentTimeMillis();
            LockSupport.parkNanos(1L);
            parkData[i] = System.currentTimeMillis() - point;

            point = System.currentTimeMillis();
            Thread.sleep(1L);
            sleepData[i] = System.currentTimeMillis() - point;
        }

        Arrays.sort(parkData);
        Arrays.sort(sleepData);

        System.out.println();
        System.out.println("parkNanos:");
        System.out.println("Min: " + parkData[0]);
        System.out.println("Median: " + parkData[parkData.length / 2]);
        System.out.println("80%: " + parkData[Math.round(((float) parkData.length) * 0.80F)]);
        System.out.println("90%: " + parkData[Math.round(((float) parkData.length) * 0.90F)]);
        System.out.println("99%: " + parkData[Math.round(((float) parkData.length) * 0.99F)]);
        System.out.println("Max: " + parkData[parkData.length - 1]);
        System.out.println();

        System.out.println();
        System.out.println("sleep:");
        System.out.println("Min: " + sleepData[0]);
        System.out.println("Median: " + sleepData[sleepData.length / 2]);
        System.out.println("80%: " + sleepData[Math.round(((float) sleepData.length) * 0.80F)]);
        System.out.println("90%: " + sleepData[Math.round(((float) sleepData.length) * 0.90F)]);
        System.out.println("99%: " + sleepData[Math.round(((float) sleepData.length) * 0.99F)]);
        System.out.println("Max: " + sleepData[sleepData.length - 1]);
        System.out.println();
    }
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Use Thread.sleep instead of LockSupport.parkNanos to obtain accuracy 1 millisecond