Timing for Thinkpad keyboards

different keypairs get different timings!!
lk, 15ms timepoint extremely hard to reach:
22.2999
22.4453
22.4658
22.4949
22.527
22.5758
22.7051
22.7232
22.7593
22.8349
30.192
30.2835
30.3919
30.4128
30.4559
30.4654
30.476
30.5175
38.2974
38.3032
38.3779
38.421
38.4481
38.4653
38.4674
38.49
38.5093
38.5544
38.6427
46.2018
46.2477
46.3709
46.4148
46.4436
46.4538
46.4949
46.6341
54.2646

kl, 15ms timepoint very easy to reach:
15.3636
15.3866
15.4006
23.3053
23.3977
23.4437
23.4445
23.4461
23.5648
31.3402
31.3603
31.4252
31.4317
31.4597
31.472
39.1797
39.2983
39.4428
47.1468
47.1854
47.4186
47.6871
55.3898
63.5269

as:
15.4416
15.4975
23.4741
23.4745
31.4252
31.4354
31.4564
31.4707
31.4851
31.5463
39.4555
47.2494
47.3184
47.4227
47.4387
55.4395
55.4424
55.4662
55.4966

ls:
20.3035
20.4969
20.7161
28.4673
28.4702
28.4883
28.4907
28.4911
28.4952
28.7042
36.393
36.4024
36.4304
36.455
36.4673
36.4788
36.4997
36.5018
36.5231
36.5478
36.5531
36.643
36.6479
36.6586
44.1877
44.2099
44.2702
44.3626
44.3626
44.3757
44.3815
44.4114
44.4114
44.4151
44.4168
44.4266
44.4275
44.4279
44.4484
44.4845
44.5551
44.5806
44.6454
51.7501
52.0674
52.2448
52.3991
52.4065
52.4246
52.4352
52.4393
52.443
52.4459
52.4541
52.4603
52.4664
52.5054
52.6442
52.6557
60.374
68.3757
68.4126
68.4143
68.4422
68.4939

ld:
20.9255
20.9284
20.9284
20.9423
20.9973
28.8618
28.9382
28.939
28.9423
28.9431
28.9534
28.9817
28.9883
29.0043
29.0068
29.0117
36.836
36.884
36.8881
36.907
36.9086
36.932
36.9484
36.9517
36.9521
44.8368
44.8577
44.8836
44.9521
44.9726
52.7448
52.8753
52.8868
52.9115
60.7792
60.8379
60.8995
60.9903

spamming USB keyboard (dell):
7.34929
15.3304
15.3476
15.3764
15.5582
15.8004
15.9491
16.0706
22.7031
23.2708
23.4773
23.5459
23.5607
23.6867
23.9269
23.9548
23.9618
24.0307
24.0504
24.4983
30.9974
31.6124
31.6588
31.7306
31.7335
31.7536
31.8111
31.9494
31.9515
32.0266
32.2089
32.2388
32.2508
32.2565
32.2861
32.355
39.0959
39.6152
39.678
40.068
40.1222
40.1846
40.1928
47.6115
47.7117
47.7708
47.816
47.8275
47.8459
47.9128
48.1037
48.2532
48.2897
48.5668
55.1731
55.7244
55.7889
55.8701
56.0635
56.3004
56.3406
56.8936
63.6965
63.7285
64.0865
64.1168
64.2191
64.2864
71.2395
71.4731
71.648
72.2856
79.1069
79.4374
80.1
80.2568
80.3504
80.6915
87.3877
87.8339
87.8655
87.8865
95.517
97.031

spamming Thinkpad T530 keyboard:
14.3164
14.6497
15.7762
15.784
19.6808
20.9555
22.6514
23.2848
23.55
24.4626
27.0814
27.7111
27.9106
28.1816
28.2949
28.7042
29.4148
29.4452
30.0269
33.7726
36.2448
37.5297
37.9099
42.6154
42.718
42.874
43.1384
43.9287
44.627
46.0581
46.1258
46.3795
46.6336
46.9387
48.4088
50.3243
50.4996
50.9212
51.9713
53.7539
54.8553
56.0331
57.9101
57.9885
59.0263
59.9524
60.4081
60.6495
61.0683
64.8127
66.0763
66.1535
66.8592
68.6626
68.8482
69.0666
72.0401
72.4834
75.2015
76.4799
76.9968
78.2961
78.6217
80.9863
82.8645
84.0587
84.1371
84.5928
88.5244
88.8295
89.9523
90.2359
91.6116
93.941
97.1423
97.1554
97.6879
97.6907
97.9022
99.2044