Usualy i using my garmin 965 (945 before) with polar h-10 hrm. It worked perfectly. But half year ago some problems came.
HRM works not correсt. There are dips in the charts. Usualy when i start to running my heart rate increase according my pace, but after 5-10 min HR falling till 40-60 bps and stay conctantly for undefinently period of this training. It may be corretly again or not. For example (pic.3) i skiing (nordic ski) with pace 4.00 min\km but my HR was 40-60 BPM. I sure it not correct.
When i use Iphone + H-10 HRM it's works good, without dips. I tryed to change battery, use water for strap - not effect. I have 2 polar HRM-10 and straps with simmilar problem.
anyone have similar problems?
