I have exactly the same issue, spent probably 3h trying to make it work without success (changing drivers, different settings, disabling telephony etc). The audio is cracling and the connection is not reliable, something is clearly not compatible or working optimally. My computer is Surface Pro 3 with Marvell Avastar chip. On Android devices and on Linux bluetooth works fine with SBH52. On the same surface SBH52 is not working, SBH20 is working perfectly.... Very strange and would be really appreciated if sony could look into it.
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