feat: better microsecond timer #7822

Job	Run time
Run tests (x9dp2019)	3m 5s
Run tests (tx16s)	9m 9s
Run tests (nv14)	6m 48s
Run tests (el18)	7m 54s
Run tests (t12)	3m 51s
Run tests (t16)	8m 6s
Run tests (t18)	7m 15s
Run tests (t8)	3m 17s
Run tests (tlite)	4m 16s
Run tests (t20)	3m 13s
Run tests (tx12)	3m 39s
Run tests (x10)	7m 21s
Run tests (x12s)	8m 1s
Run tests (x7)	4m 10s
Run tests (x9d)	4m 45s
Run tests (x9dp)	3m 47s
Run tests (x9e)	3m 46s
Run tests (x9lite)	3m 9s
Run tests (x9lites)	3m 46s
Run tests (xlite)	3m 29s
Run tests (xlites)	3m 47s
Run builds (nv14;el18)	7m 23s
Run builds (t12)	2m 13s
Run builds (t16)	5m 49s
Run builds (t18)	4m 33s
Run builds (t8;zorro;pocket;commando8)	6m 47s
Run builds (tlite;tpro;tprov2;lr3pro)	4m 58s
Run builds (t20)	2m 4s
Run builds (tx12;tx12mk2;boxer)	5m 40s
Run builds (tx16s)	4m 19s
Run builds (x10;x10-access)	7m 39s
Run builds (x12s)	5m 0s
Run builds (x7;x7-access)	2m 57s
Run builds (x9d;x9dp;x9dp2019)	4m 55s
Run builds (x9e;x9e-hall)	3m 0s
Run builds (x9lite;x9lites)	3m 3s
Run builds (xlite;xlites)	3m 7s
	3h 0m 1s

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