I tried to execute tests on another computer (Win 7 x86).
SELECT test 1 or 2
1
iteration 1 : 1233ms
iteration 2 : 43ms
iteration 3 : 42ms
iteration 4 : 42ms
iteration 5 : 46ms
SELECT test 1 or 2
2
iteration 1 : 1229ms
iteration 2 : 55ms
iteration 3 : 51ms
iteration 4 : 53ms

Average time after inital load: 53
It seems, this is "the feature" of my system or x64 platform with multicore
processor
